Difference: LHCHXSWGBb (1 vs. 11)

Revision 112014-11-04 - ReiTanaka

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

H->bbbar Final State Subgroup (LHC HXS WG)

Line: 70 to 70
 

-- ReiTanaka - 02-Oct-2010 \ No newline at end of file

Added:
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META TOPICMOVED by="tanaka" date="1415128495" from="LHCPhysics.Bb" to="LHCPhysics.LHCHXSWGBb"

Revision 102014-11-03 - ReiTanaka

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

H->bbbar Final State Subgroup (LHC HXS WG)

Line: 47 to 47
 

Baseline Common Parameters

Changed:
<
<
Use the parameters from this TWiki. These will be updated with PDG2010 (they are now PDG2009). For PDFs, use the NLO PDFs recommended by PDF4LHC: CTEQ6.6, MSTW2008nlo, NNPDF2.0.
>
>
Use the parameters from this TWiki. These will be updated with PDG2010 (they are now PDG2009). For PDFs, use the NLO PDFs recommended by PDF4LHC: CTEQ6.6, MSTW2008nlo, NNPDF2.0.
 

Available Tools

Revision 92011-11-11 - ChristopherPotter

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

H->bbbar Final State Subgroup (LHC HXS WG)

Line: 26 to 26
 

VH->Vbb for LHCb

Changed:
<
<

Boosted VH->Vbb (PRELIMINARY!)

>
>

Boosted VH->Vbb

 
  • pt(H)>200 GeV
  • pt(V)>200 GeV
  • No additional C/A jets with pt > 20 GeV (|eta|<2.4)
Changed:
<
<

Non-boosted VH->Vbb (PRELIMINARY proposal from ATLAS, to be discussed with CMS and LHCb)

>
>

Non-boosted VH->Vbb (PRELIMINARY proposal from ATLAS)

 
  • pT(e/mu) > 20-25GeV
  • |eta(e/mu)| < 2.5
  • 2 jets with pT>25GeV
  • MET > 25GeV (????)
Changed:
<
<

ttH->ttbb (PRELIMINARY!)

>
>

Non-boosted ttH->ttbb

 
  • exactly one isolated lepton with pt>25 GeV (20 GeV) e(mu).
  • >=6 jets with pt>20 GeV
  • >=4 b-tagged jets with pt>20 GeV
Added:
>
>

Boosted ttH->ttbb

  • pT(H)>2*mH
 

Baseline Common Parameters

Use the parameters from this TWiki. These will be updated with PDG2010 (they are now PDG2009). For PDFs, use the NLO PDFs recommended by PDF4LHC: CTEQ6.6, MSTW2008nlo, NNPDF2.0.

Revision 72011-06-03 - ChristopherPotter

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

H->bbbar Final State Subgroup (LHC HXS WG)

Line: 43 to 43
 
  • >=4 b-tagged jets with pt>20 GeV

Baseline Common Parameters

Deleted:
<
<
Preliminary parameters are taken from arXiv:1101.0538 (PDF, alpha_s, delta alphs_s) and Table A.1 in CERN-2011-002.
 
Changed:
<
<
Parameter arXiv:1101.0538 Choice Sort
NLO PDF CTEQ6.6, MSTW2008, NNPDF2.0
alpha_s 0.118, 0.1207, 0.119 resp.
delta alpha_s 0.002 90% C.L.

Parameter CERN-2011-002 Choice Sort
electron mass 0.510998910(13) MeV
muon mass 105.658367(4) MeV
tau mass 1776.84(17) MeV
u quark mass 190 MeV
d quark mass 190 MeV
s quark mass 190 MeV
c quark mass 1.40 GeV
b quark mass 4.75 GeV
t quark mass 172.5 2.5 GeV
MS scheme c mass 1.28 GeV
MS scheme b mass 4.16 GeV
c pole mass 1-loop 1.41 GeV
c pole mass 2-loop 1.55 GeV
b pole mass 1-loop 4.49 GeV
b pole mass 2-loop 4.69 GeV
W mass 80.398 0.025 GeV
W width 2.141 0.041 GeV
NLO W width 2.08872 GeV
Z mass 91.1876 0.0021 GeV
Z width 2.4952 0.0023 GeV
NLO Z width 2.49595 GeV
GF 1.16637(1) 10−5 GeV−2
>
>
Use the parameters from this TWiki. These will be updated with PDG2010 (they are now PDG2009). For PDFs, use the NLO PDFs recommended by PDF4LHC: CTEQ6.6, MSTW2008nlo, NNPDF2.0.
 

Available Tools

Revision 62011-06-02 - ChristopherPotter

Line: 1 to 1
 
META TOPICPARENT name="CrossSections"
Added:
>
>

H->bbbar Final State Subgroup (LHC HXS WG)

 
Changed:
<
<
See Sharepoint discussions here: VH->Vbb, ttH->ttbb, bb.
>
>
Tip, idea Contribute to Sharepoint discussions here: VH production, ttH production, bb final state. Tip, idea
 
Changed:
<
<

Group Contacts and Members

>
>

Group Contacts and Contributors

 
Changed:
<
<
  • Experiment: Chris Potter, Jim Olsen, Clara Matteuzzi, Chris Neu, Chris Collins-Tooth, Giacinto Piaquadio, Douglas Wright, Michiel Sanders
>
>
  • Experiment: Chris Potter, Jim Olsen, Clara Matteuzzi, Chris Neu, Chris Collins-Tooth, Giacinto Piaquadio, Douglas Wright, Michiel Sanders, Ben Smart, Andrea Messina
 
  • Theory: Laura Reina, Michael Spira
Changed:
<
<

Plan of the Activity (both Higgs signals and SM backgrounds)

  • differential K-factor
  • overview of background determination methods (data-driven, non-data driven)
  • list of LO/NLO Monte Carlo's
  • wish List for theorists
    • NLO signal generator for ttH->ttbb
>
>
All contributors are welcome!
 
Changed:
<
<

Common cuts definition between ATLAS and CMS

>
>

Meeting Agendae

 
Changed:
<
<

VH->Vbb (PRELIMINARY!)

>
>

Plan of Activity

  • VH->Vbb differential K-factor (LO to NLO) in signal and background after common cuts with MC@NLO and POWHEG
  • ttH->ttbb differential K-factor (LO to NLO) in signal with aMC@NLO
  • evaluation of VH->Vbb and ttH->ttbb cross section uncertainties at NLO after common cuts

Common cuts definition between CMS/ATLAS/LHCb

VH->Vbb for LHCb

Boosted VH->Vbb (PRELIMINARY!)

 
  • pt(H)>200 GeV
  • pt(V)>200 GeV
  • No additional C/A jets with pt > 20 GeV (|eta|<2.4)
Added:
>
>

Non-boosted VH->Vbb (PRELIMINARY proposal from ATLAS, to be discussed with CMS and LHCb)

  • pT(e/mu) > 20-25GeV
  • |eta(e/mu)| < 2.5
  • 2 jets with pT>25GeV
  • MET > 25GeV (????)
 

ttH->ttbb (PRELIMINARY!)

  • exactly one isolated lepton with pt>25 GeV (20 GeV) e(mu).
  • >=6 jets with pt>20 GeV
Line: 61 to 75
 
GF 1.16637(1) 10−5 GeV−2

Available Tools

Added:
>
>
 

Results

Line: 71 to 90
 
Changed:
<
<

Meetings

>
>

 

-- ReiTanaka - 02-Oct-2010

Revision 52011-05-30 - ChristopherPotter

Line: 1 to 1
 
META TOPICPARENT name="CrossSections"
Changed:
<
<

H -> bb Process

>
>
  See Sharepoint discussions here: VH->Vbb, ttH->ttbb, bb.
Changed:
<
<

Goal of the group

Group Contacts

Group Members

  • Experiment: Chris Potter, Jim Olsen, Clara Matteuzzi, Chris Neu, Chris Collins-Tooth, Giacinto Piaquadio, Douglas Wright
  • Theory: ????
>
>

Group Contacts and Members

 

Plan of the Activity (both Higgs signals and SM backgrounds)

  • differential K-factor
Line: 32 to 28
 
  • >=6 jets with pt>20 GeV
  • >=4 b-tagged jets with pt>20 GeV
Added:
>
>

Baseline Common Parameters

Preliminary parameters are taken from arXiv:1101.0538 (PDF, alpha_s, delta alphs_s) and Table A.1 in CERN-2011-002.

Parameter arXiv:1101.0538 Choice Sort
NLO PDF CTEQ6.6, MSTW2008, NNPDF2.0
alpha_s 0.118, 0.1207, 0.119 resp.
delta alpha_s 0.002 90% C.L.

Parameter CERN-2011-002 Choice Sort
electron mass 0.510998910(13) MeV
muon mass 105.658367(4) MeV
tau mass 1776.84(17) MeV
u quark mass 190 MeV
d quark mass 190 MeV
s quark mass 190 MeV
c quark mass 1.40 GeV
b quark mass 4.75 GeV
t quark mass 172.5 2.5 GeV
MS scheme c mass 1.28 GeV
MS scheme b mass 4.16 GeV
c pole mass 1-loop 1.41 GeV
c pole mass 2-loop 1.55 GeV
b pole mass 1-loop 4.49 GeV
b pole mass 2-loop 4.69 GeV
W mass 80.398 0.025 GeV
W width 2.141 0.041 GeV
NLO W width 2.08872 GeV
Z mass 91.1876 0.0021 GeV
Z width 2.4952 0.0023 GeV
NLO Z width 2.49595 GeV
GF 1.16637(1) 10−5 GeV−2
 

Available Tools

Results

Line: 40 to 68
 
Added:
>
>
 

Meetings

Deleted:
<
<

Links

  -- ReiTanaka - 02-Oct-2010 \ No newline at end of file

Revision 42011-03-17 - ChristopherPotter

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

H -> bb Process

Line: 10 to 10
 

Group Members

Changed:
<
<
  • Experiment: Chris Potter, Jim Olsen, Clara Matteuzzi, Chris Neu, Chris Collins-Tooth, Giacinto Piaquadio
>
>
  • Experiment: Chris Potter, Jim Olsen, Clara Matteuzzi, Chris Neu, Chris Collins-Tooth, Giacinto Piaquadio, Douglas Wright
 
  • Theory: ????

Plan of the Activity (both Higgs signals and SM backgrounds)

Revision 32010-11-01 - ChristopherPotter

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

H -> bb Process

Added:
>
>
See Sharepoint discussions here: VH->Vbb, ttH->ttbb, bb.
 

Goal of the group

Group Contacts

Line: 23 to 25
 

VH->Vbb (PRELIMINARY!)

  • pt(H)>200 GeV
  • pt(V)>200 GeV
Changed:
<
<
  • No additional C/A jets with pt > 20 GeV (|eta|<2.4)
>
>
  • No additional C/A jets with pt > 20 GeV (|eta|<2.4)
 

ttH->ttbb (PRELIMINARY!)

  • exactly one isolated lepton with pt>25 GeV (20 GeV) e(mu).

Revision 22010-10-25 - ChristopherPotter

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

H -> bb Process

Line: 8 to 8
 

Group Members

Changed:
<
<
  • Experiment: Everybody who wants to contribute
  • Theory: Everybody who wants to contribute
>
>
  • Experiment: Chris Potter, Jim Olsen, Clara Matteuzzi, Chris Neu, Chris Collins-Tooth, Giacinto Piaquadio
  • Theory: ????
 

Plan of the Activity (both Higgs signals and SM backgrounds)

  • differential K-factor
  • overview of background determination methods (data-driven, non-data driven)
  • list of LO/NLO Monte Carlo's
  • wish List for theorists
Added:
>
>
    • NLO signal generator for ttH->ttbb
 

Common cuts definition between ATLAS and CMS

Added:
>
>

VH->Vbb (PRELIMINARY!)

  • pt(H)>200 GeV
  • pt(V)>200 GeV
  • No additional C/A jets with pt > 20 GeV (|eta|<2.4)

ttH->ttbb (PRELIMINARY!)

  • exactly one isolated lepton with pt>25 GeV (20 GeV) e(mu).
  • >=6 jets with pt>20 GeV
  • >=4 b-tagged jets with pt>20 GeV
 

Available Tools

Results

References

Added:
>
>
 

Meetings

Revision 12010-10-02 - ReiTanaka

Line: 1 to 1
Added:
>
>
META TOPICPARENT name="CrossSections"

H -> bb Process

Goal of the group

Group Contacts

Group Members

  • Experiment: Everybody who wants to contribute
  • Theory: Everybody who wants to contribute

Plan of the Activity (both Higgs signals and SM backgrounds)

  • differential K-factor
  • overview of background determination methods (data-driven, non-data driven)
  • list of LO/NLO Monte Carlo's
  • wish List for theorists

Common cuts definition between ATLAS and CMS

Available Tools

Results

References

Meetings

Links

-- ReiTanaka - 02-Oct-2010

 
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