CMS Higgs Physics Analysis Group (Higgs PAG)

Table of contents:

Current Organization (2009)

Conveners Chiara Mariotti and Andrey Korytov


Sub-group Convener TWiki page Hypernews Meeting time Tentative assignment of channels
Hγγ Marco Pieri Hγγ TWiki Hγγ forum odd week Thu, 16:30 H→γγ (all production mechanisms)
HZZ Nicola de Filippis HZZ TWiki HZZ forum even week Thu, 16:00 H→ZZ→4l/2l2ν/2l2b (inclusive production); MSSM H/A→χ20χ20→ 4l+MET; H±±H±±→4l (without τ-leptons)
HWW Guillelmo Gomez-Ceballos HWW TWiki HWW forum even week Fri, 16:30 H→WW→2l2ν (all production mechanisms)
VBF Pietro Govoni VBF TWiki VBF forum odd week Fri, 16:00 VBF H→WW→lνjj; VBF H→ZZ→(2l)jj; VBF H→invisible; Coordinate VBF di-jet tagging between all sub-groups
H2tau Alexandre Nikitenko H2tau TWiki H2tau forum even week Thu, 14:00 Everything with τ-leptons: H→ττ; H→ZZ→2l2τ/4τ; H±→τν/cs/tb; H±±H±±→4l (with τ); Also: H/A→2μ; H→bb (ttH, bbΦ)

Contacts for specific tasks

Task Contact person Task Link Charge (in coordination with sub-group conveners)
HLT Patricia Lobelle Higgs HLT validation Validate HLT efficiency for the benchmark Higgs analsyses (new CMSSW releases, new HLT tables)
Skimming Javier Fernandez / Rachel Wilken Higgs Skims Oversee that the Higgs PAG skims (code) are properly registered in cvs, validated, and documented
Software Documentation Nicola de Filippis Higgs Software Documentation Oversee that step-by-step documentation and code in cvs allows for reproducing all official Higgs PAG results
Monte Carlo Production Ivica Puljak / Guillelmo Gomez-Ceballos Higgs Monte Carlo Coordinate MC requests from the Higgs group; follow up on the MC production status
Physics Validation Susan Shotkin-Gascon Higgs Validation page Coordinate Higgs-PAG-validation of MC pre-production samples and express stream data

Contacts to POG groups

e/gamma muon JetMET Tracking b-tag Particle Flow and τ-id
Roberto Salerno / Claude Charlot Alexey Drozdetskiy Haifeng Pi Petra Merkel Georgios Anagnostou Michal Bluj

Contacts to other CMS groups

Monte Carlo Generators Statistics Committee
Ivica Puljak Gregory Schott

Higgs PAG Tier-2 centers

Tier-2 center Site contact person
T2-ES-IFCA Isidro Gonzalez-Caballero
T2-FR-GRIF Andrea Sartirana
T2-IT-Legnaro Ezio Torassa
T2-US-MIT Guillelmo Gomez-Ceballos
Each official Higgs PAG site pledged 30 TB of disk space solely for Higgs PAG use. The requests for data subscription, either real data skims or MC, can be issued by any Higgs group convener, including sub-group conveners (consensus between all 7 is always assumed). The requests should be communicated to the site contact people listed in this table. Currently, we try to make sure that each dedicated Higgs sample is kept at at least two sites to ensure uninterrupted availability of samples in case of an occasional downtime of any particular site. In addition, there are a number of Tier-2 centers very actively involved in Higgs work, including production and storage of MC samples; among these are T2-US-UCSD, T2-US-Caltech, T2-US-Florida.

Public Results

Post-PTDR results (2008 and onward)

Analysis Main Result Analysis Link
Combination WW+ZZ, Impact of 14→10 TeV Running at 10 TeV requires about 2 times larger integrated luminosity to reach the same sensitivity for SM Higgs. Exclusion of SM Higgs boson with mH~160-170 GeV requires ~200 pb-1 at 10 TeV Link
H→ZZ→4l With 1 fb-1 at 14 TeV, discovery of a SM Higgs boson is out of reach. The 95CL exclusion is possible in the mass range of about 190-230 GeV Link
H→WW→2l2v With 1 fb-1 at 14 TeV, discovery is possible for a SM Higgs boson with mH~160-170 GeV. The 95CL exclusion is possible in the mass range 140-200 GeV Link
VBF H→ττ→l+τhad+MET With 1 fb-1 at 14 TeV, neither discovery nor 95CL exclusion of a SM Higgs boson possible. Exclusion is possible on anomalous x-section σ/σSM~10 in mass range 115-135 GeV Link

Physics Technical Design Report, volume 2

Pre-PTDR results (causion: many are obsolete or superseded with more recent and more realistic updates)

Planned analyses for 2009-2010 Run data

The 2009-2010 run is expected to be have collisions at a c.o.m. energy 10 TeV and deliver an integrated luminosity of 200 fb-1 per experiment. The analyses listed below have a potential for producing publishable results, for which they should be either competitive or better than the Tevatron+LEP limits projected for 2010. These analyses are required to have dedicated web pages with the following recommended template. The list is still being formed. If you think that there is an analysis that must be on the list, but not there, please let the conveners know. The first complete version is expected to be ready by June 2009 CMS week. The paper titles given below are formulated in terms of a null search result (200 fb-1 at 10 TeV are not likely to bring a discovery of the SM or MSSM Higgs bosons), but surprises are always possible. If the Nature is kind to us and we see a significant excess of events in any of these channels, we should be ready to flip the paper titles, e.g. the first paper in the list might become Evidence for a narrow γγ-resonance with a mass 120±2 GeV/c2 produced with high transverse momenta in proton-proton collisions at center of mass energy 10 TeV .
  • Full MC-based analysis notes (CMSSW 2x or 3x MC samples) should be prepared by the September 2009 (CMS week in Bologna).
  • Drafts of data papers in a form ready for submitting them for publication in 2010 ( 200 fb-1 or earlier) should be ready by the September CMS week as well.

Analysis Link contact people AN Note Paper Draft Comments
Search for a Higgs boson in H→γγ decay channel... H001 Name, Name none none Waiting for 2x bkgd MC. Fermiophobic case may be a separate paper...
Search for a Higgs boson in H→ZZ→4l decay channel... H002 Name, Name none none Waiting for 2x bkgd MC
Search for a Higgs boson in H→WW→2l2ν decay channel... H003 Name, Name none none First pass with 2x MC is available...
Combined limits for the Standard Model-like Higgs boson search... H004 Name, Name none none in progress
Search for a Higgs boson in H→ττ→l+jet+MET decay channel ... H005 Name, Name none none In progress with 2x MC...
Search for a Higgs boson in H→ττ→2l+MET decay channel ... H006 Name, Name none none In progress with 2x MC...
Search for a light charged Higgs boson... pp→tt→(qqb)(Hb) and H→τν→jet+MET ... H007 Name, Name none none Team is being formed...
Search for a light charged Higgs boson... pp→tt→(lνb)(Hb) and H→τν→jet+MET ... H008 Name, Name none none Team is being formed...

Being considered:

Analysis Link contact people AN Note Paper Draft Comments
Search for a Higgs boson produced via Vector Boson Fusion ??? Name, Name none none  
Search for a Higgs boson produced in association with two b quarks and decaying to leptons ??? Name, Name none none  
Search for a light charged Higgs boson... pp→tt→(lνb)(Hb) and H→&cs... ??? Name, Name none none  
Search for a heavy charged Higgs boson produced in association with top-quarks and decaying H→τν ... ??? Name, Name none none  
Search for a doubly charged Higgs boson decaying to leptons H±±→l±±l±± ... ??? Name, Name none none  


Higgs Phenomenology and Tools

Statistical Tools

Higgs Group social life

* photos from the 4-Nov-2008 party (Yves' farewell party): from Pietro and from Alberto

Topic attachments
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