LHC Higgs Cross Section Working Group (2012-2013)

TWiki page for new LHC Higgs XS WG can be found here.

News

• "Handbook of LHC Higgs Cross Sections: 3. Higgs Properties" has now appeared (CERN-2013-004, arXiv:1307.1347) !! (2013.07.05)
• Nobel Prize in Physics 2013 for discovery of the BEH mechanism: our σ×BR figure is cited in Advanced Information in Figure 4 ! (2013.10.08)
• Interim recommendation on 2HDM cross sections and branching ratios (LHCHXSWG-2013-001, arXiv:1312.5571v2) (2014.01.28)
• Proposal for new LHC Higgs XS WG by ATLAS and CMS Collaborations (2014.04.25)

Survey All SM Higgs Production and Decay Processes Campaign (Brainstorming Meeting, Minutes)

Overview

In January 2010, a new joint effort for Higgs cross sections between ATLAS, CMS and theory community was announced and the new LHC wide working group has been created. The aim of this group is to produce agreements on cross sections, branching ratios and pseudo-observables relevant to SM and MSSM Higgs boson(s), which will facilitate comparison and combination of results. This will require the active collaboration of the leading theorists developing the tools with experimental collaborations.
In Spring 2012, the group has been restructured and new subgroups were added where the Higgs property measurement phenomenological issues and BSM theoretical issues will be discussed. The nomination of new theory overall contacts agreed between ATLAS and CMS has been documented. New structure and contact persons have been identified and the LoI for 2012-2014 activity has been submitted. The overall contact persons from ATLAS, CMS and theory community and contact persons for subgroups have been appointed for 2-year mandate starting from April 1st, 2012. The contacts will report the progress to each Higgs working groups.
The group is an open forum and all interested parties are invited to contribute. The results posted are under the responsibility of the subgroup and of the overall contacts of LHC Higgs XS WG. Nevertheless ATLAS/CMS and the LHC Higgs XS WG respect the scientific value of original works performed outside the group. ATLAS/CMS have sole responsibility on citing work done within the LHC Higgs XS WG or not, but do not guarantee that the actual numbers used in the analyses will include results which have been produced outside the LHC Higgs XS WG. One also should keep in mind that this group is not a forum for general discussion on Higgs physics. Unreleased data results from the collaborations will not be shown nor discussed in this group.
If you want to join any of the subgroup, please send an e-mail to subgroup contacts listed below as well as to the overall contacts. Please subscribe yourself to the mailing list lhc-higgs.

CERN 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).
   • BibTeX and LaTeX citation format for CERN-2011-002 (arXiv:1101.0593), CERN-2012-002 (arXiv:1201.3084) and CERN-2013-004 (arXiv:1307.1347).

Preprints

1. Interim recommendations to explore the coupling structure of a Higgs-like particle (arXiv:1209.0040).

Higgs cross sections and decay branching ratios

Numbers are always the most updated ones.

• Recommended values on SM Higgs XS for ggF, VBF, WH, ZH, ttH and bbH at 7 TeV (CERN Report 3)
• Recommended values on SM Higgs XS for ggF, VBF, WH, ZH, ttH and bbH at 8 TeV (CERN Report 3)
• Recommended values on SM Higgs XS for ggF, VBF, WH, ZH and ttH at 14 TeV (CERN Report 1)
• Recommended values on SM Higgs XS for ggF, VBF, WH, ZH, ttH and bbH at 13.0, 13.5 and 14.0 TeV (update 2014)

• Recommended values on SM Higgs XS at 7/8/14/33/...100 TeV for HL-LHC and HE-LHC for ggF, VBF, WH, ZH, ttH, bbH, HH, HHH, qqHH, WHH and ZHH

• Recommended values on SM Higgs BR (CERN Report 3)

• Recommended values on XS and BR for Higgs in the Fourth Generation Model at 7 TeV
• Recommended values on BR for Fermiophobic Model

• MSSM neutral Higgs: XS scans of the m_A-tanβ plane in the mhmax scenario

Latest plots

• You can find more figures at our gallery here.
• For BSM plots, please look at each XS and BR TWiki page linked above.
• You can also find useful figures for talks/lectures at European Strategy page.

Figure 1: Standard Model Higgs boson production cross sections at Ecm = 7 and 8 TeV. Transition for VBF at M_H=300 GeV at 8 TeV is due to change from ZWA to complex-pole-scheme. Right hand plot shows the total cross sections for Ecm = 7, 8 and 14 TeV.

Figure 2: Standard Model Higgs boson decay branching ratios and total width.

Figure 3: Standard Model Higgs boson production cross section times branching ratio at Ecm= 8 TeV. For H→ττ both inclusive (solid line) and VBF (dashed line) mode are plotted.

Information

Instruction for CERN Yellow Report	SVN Information (Repository)
Instruction for Higgs Cross Section Calculation at 7, 8 and 14 TeV	Recommended SM Input Parameters

Workshops

The 7th Workshop at CERN 2012	Dec. 5-6, 2012	Home page	Agenda
The 6th Workshop at CERN 2012	May 24-25, 2012	Home page	Agenda
The 5th Workshop at LAL 2011	Nov. 21-22, 2011	Home page	Agenda
The 4th Workshop at BNL 2011	May 4-6, 2011	Home page	Agenda
The 3rd Workshop at Bari 2010	Nov. 4-5, 2010	Home page	Agenda
The 2nd Workshop at CERN 2010	Jul. 5-6, 2010	Home page	Agenda	Minutes
Inauguration Workshop in Freiburg 2010	Apr. 12-13, 2010	Home page	Agenda	Minutes

Communication Tools

Computing Account
Mailing List Information	lhc-higgs Archive	For group's global issues, announcement of group meetings, meeting summary etc. Archived.
	lhc-higgs-contact Archive	For contact persons (restricted access). Can send message to this from lhc-higgs subscribers.
InDico	InDico Agenda	Group's workshop and subgroup meeting agenda system.
TWiki	TWiki page	Static information site that is updated mainly by contact persons. Group organization, subgroup information, final documents/minutes, link for tools and meetings, etc.
Sharepoint	Sharepoint Manual	Discussion forum for on-going issues. Archived.

Organization

• The mandate of the current overall and subgroup contacts are until March 31, 2014.
• Click here for organization 2010-2011.

Overall Contacts

Subgroup Contacts and Link for Subgroup Wiki

• We are organized in 11 subgroups, with 1-2 experimental contacts from each ATLAS and CMS and 2-4 theoretical contacts for each subgroup.

-- ChiaraMariotti, ReiTanaka - 05-Apr-2012

Attached files

• HiggsXSWG_nomination_2012.pdf: Nomination 2012-2014
• HiggsXSWG_LoI_2012.txt: LoI for Activity in 2012-2014

• Higgs_XS_8TeV_lx.pdf: Higgs_XS_8TeV_lx.pdf

-- ReiTanaka - 08 May 2014