Difference: LHCHXSWGOFFSHELL (1 vs. 90)

Revision 902019-09-18 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

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  Closed meetings of the subgroup conveners:
Added:
>
>
  • 17 September 2019
 
  • 16 April 2018
  • 21 March 2018
  • 09 May 2017

Closed meetings with WG1 conveners:

Added:
>
>
  • 18 September 2019
 
  • 16 July 2019
  • 3 April 2019
  • 15 February 2019

Revision 892019-08-13 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

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  • NLO cross section with massless quarks only yields K-factor of 1.5–2 ↗ arXiv:1509.06734 (ZZ), arXiv:1511.08617 (WW)
  • at high mass: top loops are important, study s/mt2 expansion (∼6th order), for s > (2mt)2 explore extrapolation methods (validate at LO, or NLO for Higgs)
    • gg → Z* Z* → 2l2l'   and   gg → W* W* → ll'νν'   for s ≲ (2mt)2   (WW: mt=0) ↗ arXiv:1605.04610
Changed:
<
<
    • gg → ZZ (on-shell Z's) hence MZZ > 2MZ, signal-background interference extrapolated to s ≫ (2mt)2 using the conformal mapping and Padé approximants ↗ arXiv:1605.01380
      the extrapolation method is also applicable to the gg background cross section
      related: in arXiv:1709.07799 top mass corrections for gg → HH are obtained via large mass expansion using the conformal mapping and Padé approximants and compared with the exact NLO result
>
>
    • gg → ZZ (on-shell Z's) hence MZZ > 2MZ, signal-background interference extrapolated to s ≫ (2mt)2 using the conformal mapping and Padé approximants ↗ arXiv:1605.01380 and arXiv:1908.04061
  Development of MC tools for off-shell gg (→ H) → ZZ,WW → 4 leptons at NLO

Revision 882019-07-17 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

Line: 12 to 12
 Group conveners

Mail ATLAS CMS THEORY
Changed:
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<
Mail Lailin Xu, Roberto Di Nardo Ulascan Sarica, Meng Xiao Nikolas Kauer, Raoul Röntsch
>
>
Mail Lailin Xu Ulascan Sarica Nikolas Kauer, Raoul Röntsch
  Documents

Revision 872019-07-16 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

Line: 55 to 55
  Closed meetings with WG1 conveners:
Added:
>
>
  • 16 July 2019
 
  • 3 April 2019
  • 15 February 2019
  • 8 October 2018

Revision 862019-07-10 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

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  Forthcoming meetings:
Added:
>
>
* 16th general meeting (16 October 2019) Indico link
 Open meetings:

  • HXSWG Offshell & Interference Meeting (27 May 2019) Indico link

Revision 852019-07-02 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

Line: 12 to 12
 Group conveners

Mail ATLAS CMS THEORY
Changed:
<
<
Mail Lailin Xu (Roberto Di Nardo) Ulascan Sarica (Meng Xiao) Nikolas Kauer, Raoul Röntsch
>
>
Mail Lailin Xu, Roberto Di Nardo Ulascan Sarica, Meng Xiao Nikolas Kauer, Raoul Röntsch
  Documents

Revision 842019-05-30 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

Line: 12 to 12
 Group conveners

Mail ATLAS CMS THEORY
Changed:
<
<
Mail Roberto Di Nardo, Lailin Xu Ulascan Sarica, Meng Xiao Nikolas Kauer, Raoul Röntsch
>
>
Mail Lailin Xu (Roberto Di Nardo) Ulascan Sarica (Meng Xiao) Nikolas Kauer, Raoul Röntsch
  Documents

Revision 832019-05-27 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

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  Forthcoming meetings:
Deleted:
<
<
  • HXSWG Offshell & Interference Meeting (27 May 2019, 16:00) Indico link
 Open meetings:
Added:
>
>
  • HXSWG Offshell & Interference Meeting (27 May 2019) Indico link
 
  • 15th general meeting (10 December 2018) Indico link
  • Off-shell/interference-enabled BSM/EFT studies (24 May 2018) Indico link
  • Development of MC tools for off-shell gg (→ H) → ZZ,WW → 4 leptons at NLO [signal-background interference and gg background] (22 May 2018) Indico link

Revision 822019-05-13 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

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  Meetings
Added:
>
>
Forthcoming meetings:

  • HXSWG Offshell & Interference Meeting (27 May 2019, 16:00) Indico link
 Open meetings:

Revision 812019-04-29 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

Line: 12 to 12
 Group conveners

Mail ATLAS CMS THEORY
Changed:
<
<
Mail Roberto Di Nardo, Lailin Xu Meng Xiao Nikolas Kauer, Raoul Röntsch
>
>
Mail Roberto Di Nardo, Lailin Xu Ulascan Sarica, Meng Xiao Nikolas Kauer, Raoul Röntsch
  Documents

Revision 802019-04-04 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

Line: 12 to 12
 Group conveners

Mail ATLAS CMS THEORY
Changed:
<
<
Mail Lailin Xu Meng Xiao Nikolas Kauer, Raoul Röntsch
>
>
Mail Roberto Di Nardo, Lailin Xu Meng Xiao Nikolas Kauer, Raoul Röntsch
  Documents

Revision 792019-04-04 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

Line: 63 to 63
 

Future Directions and Discussion Points

SM precision tools and residual uncertainty estimates:

Added:
>
>
(in order of priority)
 • qg effects at NLO: numerical impact and impact on scale uncertainty, especially in view of the overlap with pp → VV at N3LO
Deleted:
<
<
• qq effects at NLO at high invariant mass
 • Off-shell finite top mass corrections at NLO (interference, gg background): exact or in large mass expansion with extrapolation above top-pair threshold (uncertainty?)
• Off-shell MC tools: high-mass NLO gg → VV matched/merged with PS ↪ public event generators for experimental studies (Herwig7, MG5_aMC, POWHEG, Sherpa, ...)
Deleted:
<
<
• Off-shell parton shower effects: compare NLO+PS with (merged) LO+PS predictions
 • NLO EW corrections to gg → VV ↗ compare e.g. NLO EW corrections to qq → 4l arXiv:1611.05338
Added:
>
>
• Off-shell parton shower effects: compare NLO+PS with (merged) LO+PS predictions
• qq effects at NLO at high invariant mass
 • Off-shell predictions for qq → VV at NNLO QCD and NLO EW (dominant background)
• Improved precision in H → γγ interference studies
Changed:
<
<
• Gluon-fusion contamination of VBF high-mass off-shell Higgs signal
>
>
• Gluon-fusion contamination of VBF high-mass off-shell Higgs signal
 Off-shell high-mass BSM and EFT constraints, interference studies and tools:
Added:
>
>
(in order of priority)
 • Model dependence of the Higgs width extraction
• Use of anomalous couplings/EFT in Higgs width extraction
• Measurement of offshell couplings and feedback into width extractions

Revision 782019-04-04 - LailinXu

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

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 Other related papers and talks
Changed:
<
<
>
>
  • CMS Run2 Offshell (4l with anomalous HVV couplings considered, 80/fb) : arXiv:1901.00174
 

Revision 772019-04-04 - RaoulHorstRontsch

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

Line: 63 to 63
 

Future Directions and Discussion Points

SM precision tools and residual uncertainty estimates:

Added:
>
>
• qg effects at NLO: numerical impact and impact on scale uncertainty, especially in view of the overlap with pp → VV at N3LO
• qq effects at NLO at high invariant mass
 • Off-shell finite top mass corrections at NLO (interference, gg background): exact or in large mass expansion with extrapolation above top-pair threshold (uncertainty?)
• Off-shell MC tools: high-mass NLO gg → VV matched/merged with PS ↪ public event generators for experimental studies (Herwig7, MG5_aMC, POWHEG, Sherpa, ...)
• Off-shell parton shower effects: compare NLO+PS with (merged) LO+PS predictions
Deleted:
<
<
• qg effects at NLO (but: overlap with pp → VV at N3LO)
 • NLO EW corrections to gg → VV ↗ compare e.g. NLO EW corrections to qq → 4l arXiv:1611.05338
• Off-shell predictions for qq → VV at NNLO QCD and NLO EW (dominant background)
• Improved precision in H → γγ interference studies
• Gluon-fusion contamination of VBF high-mass off-shell Higgs signal
Changed:
<
<
Off-shell high-mass BSM and EFT constraints, interference studies and tools
>
>
Off-shell high-mass BSM and EFT constraints, interference studies and tools:
• Model dependence of the Higgs width extraction
• Use of anomalous couplings/EFT in Higgs width extraction
• Measurement of offshell couplings and feedback into width extractions
 

Selected Resources

Revision 762019-04-01 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

Line: 50 to 50
  Closed meetings with WG1 conveners:
Added:
>
>
  • 3 April 2019
 
  • 15 February 2019
  • 8 October 2018
  • 12 December 2017

Revision 752019-03-29 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

Line: 12 to 12
 Group conveners

Mail ATLAS CMS THEORY
Changed:
<
<
Mail Roberto Di Nardo Meng Xiao Nikolas Kauer, Raoul Röntsch
>
>
Mail Lailin Xu Meng Xiao Nikolas Kauer, Raoul Röntsch
  Documents

Revision 742019-03-05 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

Line: 50 to 50
  Closed meetings with WG1 conveners:

Added:
>
>
  • 15 February 2019
 
  • 8 October 2018
  • 12 December 2017
  • 16 May 2017

Revision 732019-02-25 - RobertoDiNardo

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

Line: 133 to 133
 

Other related papers and talks

Deleted:
<
<
 
Added:
>
>
  • ATLAS m4l unfolded paper (llll with off-shell interpretation, 36/fb) : arXiv:1902.05892
 

Revision 722019-02-20 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

Line: 12 to 12
 Group conveners

Mail ATLAS CMS THEORY
Changed:
<
<
Mail Roberto Di Nardo Meng Xiao Stefan Höche, Nikolas Kauer, Jérémie Quevillon
>
>
Mail Roberto Di Nardo Meng Xiao Nikolas Kauer, Raoul Röntsch
  Documents

Revision 712018-12-10 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

Line: 68 to 68
 • NLO EW corrections to gg → VV ↗ compare e.g. NLO EW corrections to qq → 4l arXiv:1611.05338
• Off-shell predictions for qq → VV at NNLO QCD and NLO EW (dominant background)
• Improved precision in H → γγ interference studies
Added:
>
>
• Gluon-fusion contamination of VBF high-mass off-shell Higgs signal
 Off-shell high-mass BSM and EFT constraints, interference studies and tools

Selected Resources

Revision 702018-12-10 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

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  Meetings
Changed:
<
<
Times are given in CET/CEST (CERN time).

Forthcoming open meetings:

>
>
Open meetings:
 
Deleted:
<
<
Past open meetings:
 
  • Off-shell/interference-enabled BSM/EFT studies (24 May 2018) Indico link
  • Development of MC tools for off-shell gg (→ H) → ZZ,WW → 4 leptons at NLO [signal-background interference and gg background] (22 May 2018) Indico link
  • 14th general meeting (26 March 2018) Indico link
Line: 47 to 42
 
  • Open off-shell/interference meeting (24 October 2014) Indico link
  • WG1 kick-off meeting (28 August 2014) Indico link
Changed:
<
<
Past closed meetings of the subgroup conveners:
>
>
Closed meetings of the subgroup conveners:
 
  • 16 April 2018
  • 21 March 2018

Revision 692018-10-08 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

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  Forthcoming open meetings:
Added:
>
>
  Past open meetings:
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  Other related papers and talks
Deleted:
<
<
 
Added:
>
>
 
META FILEATTACHMENT attachment="YRHXS4_WG1_OffshellInterference_VV_benchmark_results_22Mar2016.tar.bz2" attr="h" comment="" date="1458663500" name="YRHXS4_WG1_OffshellInterference_VV_benchmark_results_22Mar2016.tar.bz2" path="YRHXS4_WG1_OffshellInterference_VV_benchmark_results_22Mar2016.tar.bz2" size="6436819" user="nkauer" version="1"
META FILEATTACHMENT attachment="ggZZ_sig_K-fac.pdf" attr="h" comment="YR4" date="1458689718" name="ggZZ_sig_K-fac.pdf" path="ggZZ_sig_K-fac.pdf" size="68867" user="facaola" version="1"

Revision 682018-10-08 - RobertoDiNardo

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

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Added:
>
>
 
META FILEATTACHMENT attachment="YRHXS4_WG1_OffshellInterference_VV_benchmark_results_22Mar2016.tar.bz2" attr="h" comment="" date="1458663500" name="YRHXS4_WG1_OffshellInterference_VV_benchmark_results_22Mar2016.tar.bz2" path="YRHXS4_WG1_OffshellInterference_VV_benchmark_results_22Mar2016.tar.bz2" size="6436819" user="nkauer" version="1"
META FILEATTACHMENT attachment="ggZZ_sig_K-fac.pdf" attr="h" comment="YR4" date="1458689718" name="ggZZ_sig_K-fac.pdf" path="ggZZ_sig_K-fac.pdf" size="68867" user="facaola" version="1"

Revision 672018-10-08 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

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  Closed meetings with WG1 conveners:

Added:
>
>
  • 8 October 2018
 
  • 12 December 2017
  • 16 May 2017
  • 23 November 2015

Revision 662018-05-28 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

Line: 104 to 104
 
  • NLO cross section with massless quarks only yields K-factor of 1.5–2 ↗ arXiv:1509.06734 (ZZ), arXiv:1511.08617 (WW)
  • at high mass: top loops are important, study s/mt2 expansion (∼6th order), for s > (2mt)2 explore extrapolation methods (validate at LO, or NLO for Higgs)
    • gg → Z* Z* → 2l2l'   and   gg → W* W* → ll'νν'   for s ≲ (2mt)2   (WW: mt=0) ↗ arXiv:1605.04610
Changed:
<
<
    • gg → ZZ (on-shell Z's) hence MZZ > 2MZ, signal-background interference extrapolated to s ≫ (2mt)2 using conformal mapping and Padé approximant ↗ arXiv:1605.01380
>
>
    • gg → ZZ (on-shell Z's) hence MZZ > 2MZ, signal-background interference extrapolated to s ≫ (2mt)2 using the conformal mapping and Padé approximants ↗ arXiv:1605.01380
 
the extrapolation method is also applicable to the gg background cross section
Changed:
<
<

related: in arXiv:1709.07799 top mass corrections for gg → HH are obtained via large mass expansion and a Padé ansatz and compared with the exact NLO result
>
>

related: in arXiv:1709.07799 top mass corrections for gg → HH are obtained via large mass expansion using the conformal mapping and Padé approximants and compared with the exact NLO result
  Development of MC tools for off-shell gg (→ H) → ZZ,WW → 4 leptons at NLO

Revision 652018-05-25 - NikolasKauer

Line: 1 to 1
 
META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

Line: 27 to 27
  Past open meetings:
Changed:
<
<
  • Off-shell/interference-enabled BSM/EFT studies (24 May 2018, 17:00) Indico link
>
>
  • Off-shell/interference-enabled BSM/EFT studies (24 May 2018) Indico link
 
  • Development of MC tools for off-shell gg (→ H) → ZZ,WW → 4 leptons at NLO [signal-background interference and gg background] (22 May 2018) Indico link
  • 14th general meeting (26 March 2018) Indico link
  • gg → ZZ NLO K factor discussion (22 February 2018) Indico link

Revision 642018-05-24 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

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 Forthcoming open meetings:
Deleted:
<
<
  • Off-shell/interference-enabled BSM/EFT studies (24 May 2018, 17:00) Indico link
 Past open meetings:
Added:
>
>
  • Off-shell/interference-enabled BSM/EFT studies (24 May 2018, 17:00) Indico link
 
  • Development of MC tools for off-shell gg (→ H) → ZZ,WW → 4 leptons at NLO [signal-background interference and gg background] (22 May 2018) Indico link
  • 14th general meeting (26 March 2018) Indico link
  • gg → ZZ NLO K factor discussion (22 February 2018) Indico link

Revision 632018-05-22 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

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  Forthcoming open meetings:
Changed:
<
<
  • Development of MC tools for off-shell gg (→ H) → ZZ,WW → 4 leptons at NLO [signal-background interference and gg background] (22 May 2018, 16:30) Indico link
>
>
 
  • Off-shell/interference-enabled BSM/EFT studies (24 May 2018, 17:00) Indico link

Past open meetings:

Added:
>
>
  • Development of MC tools for off-shell gg (→ H) → ZZ,WW → 4 leptons at NLO [signal-background interference and gg background] (22 May 2018) Indico link
 

Revision 622018-05-19 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

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 • Improved precision in H → γγ interference studies
Off-shell high-mass BSM and EFT constraints, interference studies and tools
Deleted:
<
<
ATLAS and CMS wishlist for upcoming re-analysis results TBA
 

Selected Resources

Handbook of LHC Higgs Cross Sections (CERN Yellow Reports)

Revision 612018-04-28 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

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 Forthcoming open meetings:

  • Development of MC tools for off-shell gg (→ H) → ZZ,WW → 4 leptons at NLO [signal-background interference and gg background] (22 May 2018, 16:30) Indico link
Changed:
<
<
  • Off-shell/interference-enabled BSM/EFT studies (24 May 2018, 17:00)
>
>
  • Off-shell/interference-enabled BSM/EFT studies (24 May 2018, 17:00) Indico link
  Past open meetings:

Revision 602018-04-28 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

Line: 24 to 24
  Forthcoming open meetings:
Changed:
<
<
  • Development of MC tools for off-shell gg (→ H) → ZZ,WW → 4 leptons at NLO [signal-background interference and gg background] (22 May 2018, 16:30)
>
>
  • Development of MC tools for off-shell gg (→ H) → ZZ,WW → 4 leptons at NLO [signal-background interference and gg background] (22 May 2018, 16:30) Indico link
 
  • Off-shell/interference-enabled BSM/EFT studies (24 May 2018, 17:00)

Past open meetings:

Revision 592018-04-21 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

Line: 24 to 24
  Forthcoming open meetings:
Changed:
<
<
  • Development of MC tools for off-shell gg (→ H) → ZZ,WW → 4 leptons at NLO [signal-background interference and gg background] (22 May 2018, 16:30, TBC)
>
>
  • Development of MC tools for off-shell gg (→ H) → ZZ,WW → 4 leptons at NLO [signal-background interference and gg background] (22 May 2018, 16:30)
 
  • Off-shell/interference-enabled BSM/EFT studies (24 May 2018, 17:00)

Past open meetings:

Revision 582018-04-21 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

Line: 25 to 25
 Forthcoming open meetings:

  • Development of MC tools for off-shell gg (→ H) → ZZ,WW → 4 leptons at NLO [signal-background interference and gg background] (22 May 2018, 16:30, TBC)
Changed:
<
<
  • Off-shell/interference-enabled BSM/EFT studies (24 May 2018, 17:00, TBC)
>
>
  • Off-shell/interference-enabled BSM/EFT studies (24 May 2018, 17:00)
  Past open meetings:

Revision 572018-04-20 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

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  • treatment of real corrections (subtraction) is known, but implementation for loop-induced processes is needed (see MC tools)
  • technical bottleneck: two-loop virtual corrections: full result known for massless quarks ↗ arXiv:1503.08759, arXiv:1503.08835
  • NLO cross section with massless quarks only yields K-factor of 1.5–2 ↗ arXiv:1509.06734 (ZZ), arXiv:1511.08617 (WW)
Changed:
<
<
  • at high mass: top loops are important, study s/mt2 expansion (∼6th order), for s > mt2 explore extrapolation methods (validate at LO, or NLO for Higgs)
>
>
  • at high mass: top loops are important, study s/mt2 expansion (∼6th order), for s > (2mt)2 explore extrapolation methods (validate at LO, or NLO for Higgs)
 
    • gg → Z* Z* → 2l2l'   and   gg → W* W* → ll'νν'   for s ≲ (2mt)2   (WW: mt=0) ↗ arXiv:1605.04610
    • gg → ZZ (on-shell Z's) hence MZZ > 2MZ, signal-background interference extrapolated to s ≫ (2mt)2 using conformal mapping and Padé approximant ↗ arXiv:1605.01380
      the extrapolation method is also applicable to the gg background cross section

Revision 562018-04-19 - NikolasKauer

Line: 1 to 1
 
META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell and Interference Sub-working Group

Line: 24 to 24
  Forthcoming open meetings:
Changed:
<
<
  • Development of MC tools for off-shell gg (→ H) → ZZ,WW → 4 leptons @ NLO [signal-background interference and gg background] (22 May 2018, 16:30, TBC)
>
>
  • Development of MC tools for off-shell gg (→ H) → ZZ,WW → 4 leptons at NLO [signal-background interference and gg background] (22 May 2018, 16:30, TBC)
 
  • Off-shell/interference-enabled BSM/EFT studies (24 May 2018, 17:00, TBC)

Past open meetings:

Line: 67 to 67
 • Off-shell finite top mass corrections at NLO (interference, gg background): exact or in large mass expansion with extrapolation above top-pair threshold (uncertainty?)
• Off-shell MC tools: high-mass NLO gg → VV matched/merged with PS ↪ public event generators for experimental studies (Herwig7, MG5_aMC, POWHEG, Sherpa, ...)
• Off-shell parton shower effects: compare NLO+PS with (merged) LO+PS predictions
Changed:
<
<
• qg effects at NLO (but: overlap with pp → VV at N³LO)
>
>
• qg effects at NLO (but: overlap with pp → VV at N3LO)
 • NLO EW corrections to gg → VV ↗ compare e.g. NLO EW corrections to qq → 4l arXiv:1611.05338
• Off-shell predictions for qq → VV at NNLO QCD and NLO EW (dominant background)
• Improved precision in H → γγ interference studies
Line: 99 to 99
  Please contact the conveners if you would like to have your tool added to the list.
Changed:
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Development of MC tools for off-shell gg (→ H) → ZZ,WW → 4 leptons @ NLO (in particular signal-background interference and gg background)
>
>
Status of NLO parton-level calculations for gg (→ H) → ZZ,WW → 4 leptons (in particular signal-background interference and gg background)

  • treatment of real corrections (subtraction) is known, but implementation for loop-induced processes is needed (see MC tools)
  • technical bottleneck: two-loop virtual corrections: full result known for massless quarks ↗ arXiv:1503.08759, arXiv:1503.08835
  • NLO cross section with massless quarks only yields K-factor of 1.5–2 ↗ arXiv:1509.06734 (ZZ), arXiv:1511.08617 (WW)
  • at high mass: top loops are important, study s/mt2 expansion (∼6th order), for s > mt2 explore extrapolation methods (validate at LO, or NLO for Higgs)
    • gg → Z* Z* → 2l2l'   and   gg → W* W* → ll'νν'   for s ≲ (2mt)2   (WW: mt=0) ↗ arXiv:1605.04610
    • gg → ZZ (on-shell Z's) hence MZZ > 2MZ, signal-background interference extrapolated to s ≫ (2mt)2 using conformal mapping and Padé approximant ↗ arXiv:1605.01380
      the extrapolation method is also applicable to the gg background cross section
      related: in arXiv:1709.07799 top mass corrections for gg → HH are obtained via large mass expansion and a Padé ansatz and compared with the exact NLO result

Development of MC tools for off-shell gg (→ H) → ZZ,WW → 4 leptons at NLO

  Automated loop-induced at LO:
Line: 115 to 126
 
  • MG5_aMC: in progress
  • Herwig7+GoSam: in progress
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gg (→ H) → ZZ → 2l2l' NLO K-factor for signal, gg background and signal-background interference differential in MZZ including QCD scale variation

 
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  • 11 May 2015
  • 12 December 2014
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Future Directions and Discussion Points

SM precision tools and residual uncertainty estimates:
• Off-shell finite top mass corrections at NLO (interference, gg background): exact or in large mass expansion with extrapolation above top-pair threshold (uncertainty?)
• Off-shell MC tools: high-mass NLO gg → VV matched/merged with PS ↪ public event generators for experimental studies (Herwig7, MG5_aMC, POWHEG, Sherpa, ...)
• Off-shell parton shower effects: compare NLO+PS with (merged) LO+PS predictions
• qg effects at NLO (but: overlap with pp → VV at N³LO)
• NLO EW corrections to gg → VV ↗ compare e.g. NLO EW corrections to qq → 4l arXiv:1611.05338
• Off-shell predictions for qq → VV at NNLO QCD and NLO EW (dominant background)
• Improved precision in H → γγ interference studies
Off-shell high-mass BSM and EFT constraints, interference studies and tools

ATLAS and CMS wishlist for upcoming re-analysis results TBA

 

Selected Resources

Handbook of LHC Higgs Cross Sections (CERN Yellow Reports)

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  1. Higgs Properties CERN-2013-004, arXiv:1307.1347
  2. Deciphering the Nature of the Higgs Sector CERN-2017-002-M, arXiv:1610.07922
Changed:
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>
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Public tools

Please contact the conveners if you would like to have your tool added to the list.

Development of MC tools for off-shell gg (→ H) → ZZ,WW → 4 leptons @ NLO (in particular signal-background interference and gg background)

Automated loop-induced at LO:

Implementation of loop-induced at NLO in MC tools:

  • gg → ZZ at NLO QCD matched to PS in POWHEG (gg only, no H, no quark masses) ↗ arXiv:1609.09719
  • Sherpa: in progress, in particular: process-independent implementation of NLO subtraction and PS matching schemes for loop-induced processes ↗ arXiv:1711.03319 (gg → HH)
  • MG5_aMC: in progress
  • Herwig7+GoSam: in progress

Results: gg (→ H) → ZZ → 2l2l' NLO K-factor for signal, gg background and signal-background interference differential in MZZ including QCD scale variation

 
Changed:
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>
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Selected Resources

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>
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Handbook of LHC Higgs Cross Sections (CERN Yellow Reports)
 
  1. Inclusive Observables CERN-2011-002, arXiv:1101.0593
  2. Differential Distributions CERN-2012-002, arXiv:1201.3084
  3. Higgs Properties CERN-2013-004, arXiv:1307.1347
  4. Deciphering the Nature of the Higgs Sector CERN-2017-002-M, arXiv:1610.07922
Changed:
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Group Organisation and Activities

 
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Objectives
  The group's task is to review and discuss the status and future potential of off-shell and signal-background interference enabled experimental analyses for Higgs production at the LHC (and future colliders) and related theoretical calculations/tools and phenomenological studies. The aim of this activity is to stimulate and facilitate experimental and theoretical efforts.
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Mail Roberto Di Nardo Meng Xiao Stefan Höche, Nikolas Kauer, Jérémie Quevillon
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Documents

YR4 Chapter Off-shell Higgs Production and Higgs Interference CERN-2017-002-M

Meetings

  Times are given in CET/CEST (CERN time).
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  • 11 May 2015
  • 12 December 2014
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Handbook of LHC Higgs Cross Sections (CERN Yellow Reports)

 
Deleted:
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  1. Inclusive Observables CERN-2011-002, arXiv:1101.0593
  2. Differential Distributions CERN-2012-002, arXiv:1201.3084
  3. Higgs Properties CERN-2013-004, arXiv:1307.1347

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  • Development of MC tools for off-shell gg (→ H) → ZZ,WW → 4 leptons @ NLO [signal-background interference and gg background] (22 May 2018, 16:30, TBC)
  • Off-shell/interference-enabled BSM/EFT studies (24 May 2018, 17:00, TBC)
  Past open meetings:

Changed:
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  • gg -> ZZ NLO K factor discussion (22 February 2018) Indico link
>
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  • gg → ZZ NLO K factor discussion (22 February 2018) Indico link
 
  • 13th general meeting (14 July 2017) Indico link
  • LHC EWK Multiboson + LHC HXS WG2 Joint Meeting (10 July 2017) Indico link
  • 12th general meeting (12 October 2016) Indico link
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  • Open off-shell/interference meeting (24 October 2014) Indico link
  • WG1 kick-off meeting (28 August 2014) Indico link
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  • 21 March 2018
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META FILEATTACHMENT attachment="ggZZ_sig_K-fac.pdf" attr="h" comment="YR4" date="1458689718" name="ggZZ_sig_K-fac.pdf" path="ggZZ_sig_K-fac.pdf" size="68867" user="facaola" version="1"

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Added:
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  • gg -> ZZ NLO K factor discussion (22 February 2018) Indico link
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  1. Higgs Properties CERN-2013-004, arXiv:1307.1347
  2. Deciphering the Nature of the Higgs Sector CERN-2017-002-M, arXiv:1610.07922
Changed:
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Related work not discussed in YR4

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gg (→ H) → ZZ → 2l2l' NLO K-factor for signal, gg background and signal-background interference differential in MZZ including QCD scale variation

 
Changed:
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Related talks

  • Aleksandr Azatov: SM/BSM interference pattern (14 September 2016) Indico link
>
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META FILEATTACHMENT attachment="YRHXS4_WG1_OffshellInterference_VV_benchmark_results_22Mar2016.tar.bz2" attr="h" comment="" date="1458663500" name="YRHXS4_WG1_OffshellInterference_VV_benchmark_results_22Mar2016.tar.bz2" path="YRHXS4_WG1_OffshellInterference_VV_benchmark_results_22Mar2016.tar.bz2" size="6436819" user="nkauer" version="1"
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  • WG1 kick-off meeting (28 August 2014) Indico link
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 Past open meetings:
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  • 13th general meeting (14 July 2017) Indico link
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  • 12th general meeting (12 October 2016) Indico link

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  • LHC EWK Multiboson + LHC HXS WG2 Joint Meeting (10 July 2017) Indico link
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  1. Inclusive Observables CERN-2011-002, arXiv:1101.0593
  2. Differential Distributions CERN-2012-002, arXiv:1201.3084
  3. Higgs Properties CERN-2013-004, arXiv:1307.1347
Changed:
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  1. Deciphering the Nature of the Higgs Sector arXiv:1610.07922
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  1. Deciphering the Nature of the Higgs Sector CERN-2017-002-M, arXiv:1610.07922
 

Related work not discussed in YR4

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  • Aleksandr Azatov: SM/BSM interference pattern (14 September 2016) Indico link
 

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CERN Yellow Reports: Handbook of LHC Higgs Cross Sections:

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  2. Differential Distributions CERN-2012-002, arXiv:1201.3084)
  3. Higgs Properties CERN-2013-004, arXiv:1307.1347)
  4. Deciphering the Nature of the Higgs Section close to final draft
>
>
  1. Inclusive Observables CERN-2011-002, arXiv:1101.0593
  2. Differential Distributions CERN-2012-002, arXiv:1201.3084
  3. Higgs Properties CERN-2013-004, arXiv:1307.1347
  4. Deciphering the Nature of the Higgs Sector arXiv:1610.07922
 

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  2. Deciphering the Nature of the Higgs Section close to final draft
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Related work not discussed in YR4

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  • 11th general meeting (14 January 2016) Indico link
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Group objectives

The group's task is to review and discuss the status and future potential of off-shell and signal-background interference enabled experimental analyses for Higgs production at the LHC (and future

Changed:
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colliders) and related theoretical calculations/tools and phenomenological studies. The aim of this activity is to elaborate, prioritise and coordinate experimental and theoretical efforts.
>
>
colliders) and related theoretical calculations/tools and phenomenological studies. The aim of this activity is to stimulate and facilitate experimental and theoretical efforts.
 

Group organisation

Revision 192016-07-01 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell Sub-working Group

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 Past open meetings:

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  1. Inclusive Observables CERN-2011-002, arXiv:1101.0593)
  2. Differential Distributions CERN-2012-002, arXiv:1201.3084)
  3. Higgs Properties CERN-2013-004, arXiv:1307.1347)
Added:
>
>
  1. Deciphering the Nature of the Higgs Section close to final draft
 

Benchmark results

Revision 182016-03-23 - FabrizioCaola

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META TOPICPARENT name="LHCHXSWG1"

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Benchmark results

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META FILEATTACHMENT attachment="YRHXS4_WG1_OffshellInterference_VV_benchmark_results_22Mar2016.tar.bz2" attr="h" comment="" date="1458663500" name="YRHXS4_WG1_OffshellInterference_VV_benchmark_results_22Mar2016.tar.bz2" path="YRHXS4_WG1_OffshellInterference_VV_benchmark_results_22Mar2016.tar.bz2" size="6436819" user="nkauer" version="1"
META FILEATTACHMENT attachment="ggZZ_sig_K-fac.pdf" attr="h" comment="YR4" date="1458689718" name="ggZZ_sig_K-fac.pdf" path="ggZZ_sig_K-fac.pdf" size="68867" user="facaola" version="1"

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LHC Higgs Cross Section Off-shell Sub-working Group

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Benchmark results

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META FILEATTACHMENT attachment="YRHXS4_WG1_OffshellInterference_VV_benchmark_results_22Mar2016.tar.bz2" attr="h" comment="" date="1458663500" name="YRHXS4_WG1_OffshellInterference_VV_benchmark_results_22Mar2016.tar.bz2" path="YRHXS4_WG1_OffshellInterference_VV_benchmark_results_22Mar2016.tar.bz2" size="6436819" user="nkauer" version="1"
Added:
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META FILEATTACHMENT attachment="ggZZ_sig_K-fac.pdf" attr="h" comment="YR4" date="1458689718" name="ggZZ_sig_K-fac.pdf" path="ggZZ_sig_K-fac.pdf" size="68867" user="facaola" version="1"
META FILEATTACHMENT attachment="ggZZ_bkg_K-fac.pdf" attr="h" comment="YR4" date="1458689719" name="ggZZ_bkg_K-fac.pdf" path="ggZZ_bkg_K-fac.pdf" size="74467" user="facaola" version="1"

Revision 162016-03-22 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell Sub-working Group

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  1. Inclusive Observables CERN-2011-002, arXiv:1101.0593)
  2. Differential Distributions CERN-2012-002, arXiv:1201.3084)
  3. Higgs Properties CERN-2013-004, arXiv:1307.1347)
Added:
>
>

Benchmark results

META FILEATTACHMENT attachment="YRHXS4_WG1_OffshellInterference_VV_benchmark_results_22Mar2016.tar.bz2" attr="h" comment="" date="1458663500" name="YRHXS4_WG1_OffshellInterference_VV_benchmark_results_22Mar2016.tar.bz2" path="YRHXS4_WG1_OffshellInterference_VV_benchmark_results_22Mar2016.tar.bz2" size="6436819" user="nkauer" version="1"

Revision 152016-01-15 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell Sub-working Group

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 Times are given in CET/CEST (CERN time).

Forthcoming open meetings:

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  • 10th general meeting (16 July 2015) Indico link
  • Heavy Higgs: off-shell low-mass and close-to-resonance Higgs line-shape vs. physical process cross section discussion (15 July 2015) Indico link
  • Joint off-shell and heavy Higgs discussion: H -->
VV signal-background interference and heavy Higgs line-shape (23 June 2015) Indico link
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  1. Inclusive Observables CERN-2011-002, arXiv:1101.0593)
  2. Differential Distributions CERN-2012-002, arXiv:1201.3084)
  3. Higgs Properties CERN-2013-004, arXiv:1307.1347)
Deleted:
<
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Links

<!--
1. 1412.7577
2. 1410.5440
3. 1429.0809
6. H+1 jet : 1409.1897
H->gg hep-ph/0302233
http://arxiv.org/abs/1309.0500
Future potential
1406. 6338,  1410.5806
-->
 \ No newline at end of file

Revision 142015-10-15 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

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 Times are given in CET/CEST (CERN time).

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  Closed meetings with WG1 conveners:

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  • 23 November 2015
 
  • 19 October 2015
  • 11 May 2015
  • 12 December 2014

Revision 132015-10-01 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell Sub-working Group

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  Group conveners:
Mail ATLAS CMS THEORY
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Mail Yanyan Gao Livia Soffi, Jian Wang Farbizio Caola, Nikolas Kauer
>
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Mail Yanyan Gao Livia Soffi, Jian Wang Farbizio Caola, Nikolas Kauer
 

Meetings (including related WG3 meetings)

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  Closed meetings with WG1 conveners:

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  • 12 December 2014
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  • 19 October 2015
 
  • 11 May 2015
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  • 12 December 2014
 

General documentation

Revision 122015-09-25 - NikolasKauer

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META TOPICPARENT name="LHCHXSWG1"

LHC Higgs Cross Section Off-shell Sub-working Group

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  Group conveners:
Mail ATLAS CMS THEORY
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Mail Yanyan Gao Jian Wang Farbizio Caola, Nikolas Kauer
>
>
Mail Yanyan Gao Livia Soffi, Jian Wang Farbizio Caola, Nikolas Kauer
 

Meetings (including related WG3 meetings)

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  • Heavy Higgs: off-shell low-mass and close-to-resonance Higgs line-shape vs. physical process cross section discussion (15 July 2015 18:30) Indico link
  • Joint off-shell and heavy Higgs discussion: H --> VV signal-background interference and heavy Higgs line-shape (23 June 2015 14:00) Indico link
  • Higgs width constraints from H -->
gamma gamma mass peak shift (22 June 2015 21:00) Indico link
  • Higgs off-shell coupling measurements and related constraints on the Higgs width (16 June 2015 14:00) Indico link
  • >
    >
     
    • 10th general meeting (16 July 2015) Indico link
    • Heavy Higgs: off-shell low-mass and close-to-resonance Higgs line-shape vs. physical process cross section discussion (15 July 2015) Indico link
    • Joint off-shell and heavy Higgs discussion: H -->
    VV signal-background interference and heavy Higgs line-shape (23 June 2015) Indico link
  • Higgs width constraints from H --> gamma gamma mass peak shift (22 June 2015) Indico link
  • Higgs off-shell coupling measurements and related constraints on the Higgs width (16 June 2015) Indico link
  •  
    • WG3: Heavy Higgs width and interference discussion (4 May 2015) Indico link minutes
    • 9th general meeting (22 January 2015) Indico link
    • Open off-shell/interference meeting (24 October 2014) Indico link

    Revision 112015-07-15 - NikolasKauer

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    META TOPICPARENT name="LHCHXSWG1"

    LHC Higgs Cross Section Off-shell Sub-working Group

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    >
    >
      Past open meetings:
    Changed:
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    • Heavy Higgs line-shape discussion (15 July 2015 18:30) Indico link
    >
    >
    • Heavy Higgs: off-shell low-mass and close-to-resonance Higgs line-shape vs. physical process cross section discussion (15 July 2015 18:30) Indico link
     
     
    • Joint off-shell and heavy Higgs discussion: H -->
    VV signal-background interference and heavy Higgs line-shape (23 June 2015 14:00) Indico link
  • Higgs width constraints from H --> gamma gamma mass peak shift (22 June 2015 21:00) Indico link
  • Higgs off-shell coupling measurements and related constraints on the Higgs width (16 June 2015 14:00) Indico link
  • WG3: Heavy Higgs width and interference discussion (4 May 2015) Indico link minutes
  • Changed:
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    <
    >
    >
    • 9th general meeting (22 January 2015) Indico link
    • Open off-shell/interference meeting (24 October 2014) Indico link
    • WG1 kick-off meeting (28 August 2014) Indico link
      Closed meetings with WG1 conveners:

    Changed:
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    • 12 Dec 2014
    >
    >
    • 12 December 2014
     
    • 11 May 2015

    General documentation

    Revision 102015-07-15 - NikolasKauer

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    META TOPICPARENT name="LHCHXSWG1"

    LHC Higgs Cross Section Off-shell Sub-working Group

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      Past open meetings:
    Added:
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    >
    • Heavy Higgs line-shape discussion (15 July 2015 18:30) Indico link
     
     
    • Joint off-shell and heavy Higgs discussion: H -->
    VV signal-background interference and heavy Higgs line-shape (23 June 2015 14:00) Indico link
  • Higgs width constraints from H --> gamma gamma mass peak shift (22 June 2015 21:00) Indico link
  • Higgs off-shell coupling measurements and related constraints on the Higgs width (16 June 2015 14:00) Indico link
  • Revision 92015-06-23 - NikolasKauer

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    META TOPICPARENT name="LHCHXSWG1"

    LHC Higgs Cross Section Off-shell Sub-working Group

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      Forthcoming open meetings:
    Changed:
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    <
     
    • Higgs width constraints from H -->
    gamma gamma mass peak shift (Mon 22 June 2015 21:00) Indico link
  • Joint off-shell and heavy Higgs discussion: H --> VV signal-background interference and heavy Higgs line-shape (Tue 23 June 2015 14:00) Indico link
  • 10th general meeting (15 Jul 2015) Indico link
  • >
    >
      Past open meetings:
    Changed:
    <
    <
    >
    >
     
    • Joint off-shell and heavy Higgs discussion: H -->
    VV signal-background interference and heavy Higgs line-shape (23 June 2015 14:00) Indico link
  • Higgs width constraints from H --> gamma gamma mass peak shift (22 June 2015 21:00) Indico link
  • Higgs off-shell coupling measurements and related constraints on the Higgs width (16 June 2015 14:00) Indico link
  •  
    Changed:
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    • Higgs off-shell coupling measurements and related constraints on the Higgs width (Tue 16 June 2015 14:00) Indico link
    >
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      Closed meetings with WG1 conveners:

    Revision 82015-06-20 - NikolasKauer

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    META TOPICPARENT name="LHCHXSWG1"

    LHC Higgs Cross Section Off-shell Sub-working Group

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      Forthcoming open meetings:
    Changed:
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    <
     
    • Higgs off-shell coupling measurements and related constraints on the Higgs width (Tue 16 June 2015 14:00) Indico link
    • Joint off-shell Higgs and heavy Higgs meeting (with WG3): Interference between signal and VV background and line-shape (Tue 23 June 2015 14:00) Indico link
    • Higgs width constraints using the H -->
    gamma gamma mass peak shift (Mon 22 June 2015 21:00) Indico link
    >
    >
     
    • Higgs width constraints from H -->
    gamma gamma mass peak shift (Mon 22 June 2015 21:00) Indico link
  • Joint off-shell and heavy Higgs discussion: H --> VV signal-background interference and heavy Higgs line-shape (Tue 23 June 2015 14:00) Indico link
  •  

    Past open meetings:

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    Added:
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    • Higgs off-shell coupling measurements and related constraints on the Higgs width (Tue 16 June 2015 14:00) Indico link
      Closed meetings with WG1 conveners:

    Revision 72015-06-20 - NikolasKauer

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    META TOPICPARENT name="LHCHXSWG1"

    LHC Higgs Cross Section Off-shell Sub-working Group

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     Forthcoming open meetings:

    • Higgs off-shell coupling measurements and related constraints on the Higgs width (Tue 16 June 2015 14:00) Indico link
    Changed:
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    • Joint off-shell Higgs and heavy Higgs meeting (with WG3): Interference between signal and VV background (Tue 23 June 2015 14:00) Indico link
    >
    >
    • Joint off-shell Higgs and heavy Higgs meeting (with WG3): Interference between signal and VV background and line-shape (Tue 23 June 2015 14:00) Indico link
     
     
    • Higgs width constraints using the H -->
    gamma gamma mass peak shift (Mon 22 June 2015 21:00) Indico link
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    Revision 62015-06-10 - NikolasKauer

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    META TOPICPARENT name="LHCHXSWG1"

    LHC Higgs Cross Section Off-shell Sub-working Group

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    Group objectives

    Changed:
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    The subgroup's task is to review and discuss the status and future potential of off-shell and signal-background interference enabled experimental analyses for Higgs production at the LHC (and future
    >
    >
    The group's task is to review and discuss the status and future potential of off-shell and signal-background interference enabled experimental analyses for Higgs production at the LHC (and future
     colliders) and related theoretical calculations/tools and phenomenological studies. The aim of this activity is to elaborate, prioritise and coordinate experimental and theoretical efforts.

    Group organisation

    Group conveners:

    Mail ATLAS CMS THEORY
    Changed:
    <
    <
    Mail Yanyan Gao Jian Wang Farbizio Caola / Nikolas Kauer
    >
    >
    Mail Yanyan Gao Jian Wang Farbizio Caola, Nikolas Kauer
     
    Changed:
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    <

    Open meetings (including related WG3 meetings, CERN time)

    >
    >

    Meetings (including related WG3 meetings)

     
    Changed:
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    <
    Upcoming meetings:
    >
    >
    Times are given in CET/CEST (CERN time).

    Forthcoming open meetings:

     
      * Higgs off-shell coupling measurements and related constraints on the Higgs width (Tue 16 June 2015 14:00) Indico link 
      * Joint off-shell Higgs and heavy Higgs meeting (with WG3): Interference between signal and VV background (Tue 23 June 2015 14:00) Indico link
      *  Higgs width constraints using the H -->
    gamma gamma mass peak shift (Mon 22 June 2015 21:00) Indico link * HXSWG off-shell open meeting on BSM aspects and tools Doodle poll
    Added:
    >
    >

    Past open meetings:

     
    Changed:
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    Past meetings:
    >
    >
    Closed meetings with WG1 conveners:
     
    Changed:
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    * Kick-off meeting (24 Oct 2014) Indico link * WG3: Heavy Higgs width and interference discussion (4 May 2015) Indico link Minutes
    >
    >
    • 12 Dec 2014
    • 11 May 2015
     

    General documentation

    CERN Yellow Reports: Handbook of LHC Higgs Cross Sections:

    Changed:
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    <
    1. Inclusive Observables ( CERN-2011-002, arXiv:1101.0593).
    2. Differential Distributions ( CERN-2012-002, arXiv:1201.3084).
    3. Higgs Properties ( CERN-2013-004, arXiv:1307.1347).
    >
    >
    1. Inclusive Observables CERN-2011-002, arXiv:1101.0593)
    2. Differential Distributions CERN-2012-002, arXiv:1201.3084)
    3. Higgs Properties CERN-2013-004, arXiv:1307.1347)
     

    Links

    Added:
    >
    >
    <!--
     1. 1412.7577 2. 1410.5440 3. 1429.0809
    Line: 46 to 57
     http://arxiv.org/abs/1309.0500 Future potential 1406. 6338, 1410.5806
    Added:
    >
    >
    -->

    Revision 52015-06-10 - NikolasKauer

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    META TOPICPARENT name="LHCHXSWG1"

    LHC Higgs Cross Section Off-shell Sub-working Group

    Changed:
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    Goal of the group

    >
    >

    Group objectives

      The subgroup's task is to review and discuss the status and future potential of off-shell and signal-background interference enabled experimental analyses for Higgs production at the LHC (and future colliders) and related theoretical calculations/tools and phenomenological studies. The aim of this activity is to elaborate, prioritise and coordinate experimental and theoretical efforts.
    Changed:
    <
    <

    Contact and members

    >
    >

    Group organisation

     
    Changed:
    <
    <
    We invite all interesting studies. The activities are coordinated by Nikolas Kauer (n.kauer@rhulNOSPAMPLEASE.ac.uk), Fabrizio Caola (fabrizio.caola@cernNOSPAMPLEASE.ch), Jian Wang (jian.wang@cernNOSPAMPLEASE.ch), Yanyan Gao (yanyan.gao@cernNOSPAMPLEASE.ch)
    >
    >
    Group conveners:
    Mail ATLAS CMS THEORY
    Mail Yanyan Gao Jian Wang Farbizio Caola / Nikolas Kauer
     
    Changed:
    <
    <

    Overview

    >
    >

    Open meetings (including related WG3 meetings, CERN time)

     
    Changed:
    <
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    Channels considered here are dibson decay channels H->VV.
    >
    >
    Upcoming meetings:
     
    Changed:
    <
    <

    SM Calculations and MC tools

    >
    >
      * Higgs off-shell coupling measurements and related constraints on the Higgs width (Tue 16 June 2015 14:00) Indico link 
      * Joint off-shell Higgs and heavy Higgs meeting (with WG3): Interference between signal and VV background (Tue 23 June 2015 14:00) Indico link
      *  Higgs width constraints using the H -->
    gamma gamma mass peak shift (Mon 22 June 2015 21:00) Indico link * HXSWG off-shell open meeting on BSM aspects and tools Doodle poll
     
    Changed:
    <
    <

    Higgs production and decays

    >
    >
    Past meetings:
     
    Changed:
    <
    <

    gg->VV backgrounds

    >
    >
    * Kick-off meeting (24 Oct 2014) Indico link * WG3: Heavy Higgs width and interference discussion (4 May 2015) Indico link Minutes
     
    Changed:
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    <

    BSM physic searches

    >
    >

    General documentation

     
    Changed:
    <
    <

    Interpretation of the Higgs boson width

    >
    >
    CERN Yellow Reports: Handbook of LHC Higgs Cross Sections:
    1. Inclusive Observables ( CERN-2011-002, arXiv:1101.0593).
    2. Differential Distributions ( CERN-2012-002, arXiv:1201.3084).
    3. Higgs Properties ( CERN-2013-004, arXiv:1307.1347).
     
    Changed:
    <
    <

    References

    >
    >

    Links

      1. 1412.7577 2. 1410.5440 3. 1429.0809 6. H+1 jet : 1409.1897
    Changed:
    <
    <
    H->gg hep-ph/0302233

    MC tools

    >
    >
    H->gg hep-ph/0302233
     http://arxiv.org/abs/1309.0500
    Deleted:
    <
    <
     Future potential 1406. 6338, 1410.5806
    Deleted:
    <
    <

    Links

     \ No newline at end of file

    Revision 42015-05-10 - YanyanGao

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    META TOPICPARENT name="LHCHXSWG1"
    Changed:
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    This page documents the off-shell sub-working group activities.
    >
    >

    LHC Higgs Cross Section Off-shell Sub-working Group

     

    Goal of the group

    Changed:
    <
    <
    The goal of this group is to provide guidances on the following items:

    • Latest SM calculations and MC tools
      • Higgs boson production and decays in the off-shell region
      • gg->VV background processes
    • BSM physics studies that off-shell events are sensitive to
    • Interpretation of the results
      • Higgs boson width
      • ttH couplings
      • New physics effects
    >
    >
    The subgroup's task is to review and discuss the status and future potential of off-shell and signal-background interference enabled experimental analyses for Higgs production at the LHC (and future colliders) and related theoretical calculations/tools and phenomenological studies. The aim of this activity is to elaborate, prioritise and coordinate experimental and theoretical efforts.
     

    Contact and members

    Revision 32015-05-08 - YanyanGao

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    META TOPICPARENT name="LHCHXSWG1"
    This page documents the off-shell sub-working group activities.
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      We invite all interesting studies. The activities are coordinated by Nikolas Kauer (n.kauer@rhulNOSPAMPLEASE.ac.uk), Fabrizio Caola (fabrizio.caola@cernNOSPAMPLEASE.ch), Jian Wang (jian.wang@cernNOSPAMPLEASE.ch), Yanyan Gao (yanyan.gao@cernNOSPAMPLEASE.ch)
    Added:
    >
    >

    Overview

    Channels considered here are dibson decay channels H->VV.

     

    SM Calculations and MC tools

    Higgs production and decays

    Revision 22015-05-06 - YanyanGao

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    META TOPICPARENT name="LHCHXSWG1"
    This page documents the off-shell sub-working group activities.
    Line: 33 to 33
     

    References

    Added:
    >
    >
    1. 1412.7577 2. 1410.5440 3. 1429.0809 6. H+1 jet : 1409.1897

    H->gg hep-ph/0302233

    MC tools http://arxiv.org/abs/1309.0500

    Future potential 1406. 6338, 1410.5806

     

    Links

    Revision 12015-05-04 - YanyanGao

    Line: 1 to 1
    Added:
    >
    >
    META TOPICPARENT name="LHCHXSWG1"
    This page documents the off-shell sub-working group activities.

    Goal of the group

    The goal of this group is to provide guidances on the following items:

    • Latest SM calculations and MC tools
      • Higgs boson production and decays in the off-shell region
      • gg->VV background processes
    • BSM physics studies that off-shell events are sensitive to
    • Interpretation of the results
      • Higgs boson width
      • ttH couplings
      • New physics effects

    Contact and members

    We invite all interesting studies. The activities are coordinated by Nikolas Kauer (n.kauer@rhulNOSPAMPLEASE.ac.uk), Fabrizio Caola (fabrizio.caola@cernNOSPAMPLEASE.ch), Jian Wang (jian.wang@cernNOSPAMPLEASE.ch), Yanyan Gao (yanyan.gao@cernNOSPAMPLEASE.ch)

    SM Calculations and MC tools

    Higgs production and decays

    gg->VV backgrounds

    BSM physic searches

    Interpretation of the Higgs boson width

    References

    Links

     
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