1. E. Torassa - Padova - 05-02-2007 Physics Meetings bisettimanali ISCRIVETEVI ALLE HYPERNEWS !! Ezio Martino Ignazio Ambra Matthias Stefano Marco D. MondayTuesdayWednesdayThursdayFriday

2. https://twiki.cern.ch/twiki/bin/view/CMS/HiggsWGMCRequests Venerdi 23 Febbraio: Higgs group meeting https://twiki.cern.ch/twiki/bin/view/CMS/HiggsWG News on MC requests and HLT A. Nikitenko Cancellato l’Higgs group meeting previsto per la CMSweek CP-violating MSSM Higgs sector at LHC Prospects for heavy H+ analysis at 1 fb-1 in MSSM Prospects for light H+ analysis at 1 fb-1 in MSSM Higgs CP measurement via h->zz->4mu decay with cmssw120 Stefan Hesselbach Ritva Kinnunen Majid Hashemi Alex Tumanov

3. ● Starting roughly next week we will begin production of MC samples for use with the physics studies this spring and in preparation for CSA07. ● The plan: – Use CMSSW_1_2_3 for GEN SIM DIGI – Run CMSSW_1_3_x over those samples do produce RECO ● The list of samples to produce is being organized through the analysis groups, Filip Moortgat is assembling the full list for the production. Martedi 27 Febbraio: CMSSW Tutorial Which data is available and how to find it Peter Elmer http://cmsdbs.cern.ch/discovery/ http://cmslcgco01.cern.ch:8001/ DBS/DLS Dataset book keeping and location OLD link NEW link

4. Pythia And MC@NLO Samples: W and Z  For WW/WZ/ZZ all three lepton species allowed  X-sections from Pythia6.323 with default PDF for PTDR(CTEQ5L) and CTEQ6M structure func., corrected by B.R., see: http://cmsdoc.cern.ch/cms/PRS/gentools/www/xsec/cmsxsec.htmlhttp://cmsdoc.cern.ch/cms/PRS/gentools/www/xsec/cmsxsec.html  Typical PYTHIA cuts: P T (  )>7/10GeV, |  | 25GeV,|  (e)|<1.5 TOTAL W and Z (PYTHIA AND MC@NLO) + WW/WZ/ZZ (PYTHIA): ~10M  (pb) Evts for 1 fb -1 Requested Evts PYTHIA W  e 1700017M1M W W  1700017M1M W   1700017M1M Z  ee16501.6M1M Z   16501.6M1M Z   16501.6M1M WW 6666K100K WZ 1212K100K ZZ 44K100K TOTAL~5600056M6.3M Requested Evts MC@NLO 1M - - - - - 4M Martedi 27 Febbraio: QCD-Top-EWK-BPhysics MC Generation Requests for EWK Processes Ilaria Segoni

5. EWK Session, News - Roberto Tenchini !! DRAFT !! Plan for the EWK Group during 2007 Preparation for W, Z and Drell-Yan Physics with the initial data Sub-group 1 Inclusive W and Z production Sub-group 2 W, Z and multi-jets Sub-group 3 Multiboson production (WW, WZ, ZZ, W, Z) Sub-group 4 Drell-Yan Sub-group 5 PDFs from W, Z and Drell-Yan 1) Measurement of W and Z production cross section at 14 TeV in the electr. channels (10 pb−1). This is a 2007 trial publication paper. 2) Measurement of W and Z production cross section at 14 TeV in the muon channels (10 pb−1). This is a 2007 trial publication paper. 3) Tau production from W and Z decays at CMS (100 pb−1). This is a possible 2007 trial publication paper. 4)Measurement of the pT distribution of W / Z bosons at 14 TeV. (100 pb−1). 5)A precise luminosity determination from W and Z production at LHC (1 fb−1). 6) W mass measurement with the CMS Detector (1 fb−1). http://tenchini.web.cern.ch/tenchini/EWK-planfor2007.pdf Sub-group 1

6. 2) 4)

8. Venerdi 02 Marzo: Physics Plenary Online Selection: status and plan Christos Leonidopoulos L1 Muon triggers (DT, CSC, RPC): ported since early Fall L1 Calorimeter triggers (E/H TPG, RCT, GCT): 1st version on Xmas Still some remnant bug which causes lower efficiency Being worked on - hope for a fix in 1_3_0 All “basic” HLT algorithms available https://twiki.cern.ch/twiki/bin/view/CMS/OnSel_06_II_06 Trigger tables for L=2*10^33 from PTDR

9. Trigger paths: what happens next 1_3_0 (next week):  Only bugfixes allowed till release closes  New trigger paths (config files) with old algorithms: ok  Working on providing PTDRv2 trigger menu “out of the box” 1_3_1 “OnSel only release” (on or around March 9 th ):  New unpacking code (SiStrip, DT, DTTF)  “Final” versions for rest of unpacking code (except for ECAL)  Missing HLT algorithms, bugfixes in L1 emulator 1_3_2 “OnSel only release (end of March):  Speed improvements in the ECAL unpacking  Bugfixes in L1 emulator, HLT algorithms  First version of startup trigger menu?

10. Software and Detector Performance Validation Daniel Elvira Standalone muon efficiency: Mu-CMSSW_1_2_0 Improvement in the forward region. “Features” being investigated right now: inefficiency in wheel gaps, dip at the end of the barrel coverage, charge asymmetry, efficiency loss for TeV muons Accurate helium Chimney simulation

11. Vertex constraint absent in 120 (present in PTDR and in 130): Unfair comparison Overall behavior OK. Spikes at wheel gaps being investigated

12. Jet Algorithms in CMSSW Iterative Cone (IC) Midpoint Cone (MCone) kT JetsD=1.0, tower threshold E T >0.5 GeV (CMSSW 1.3.0) FastJET (starting with 1_3_0) D=1.0, 0.6, tower threshold E T >0.5 GeV (CMSSW 1.3.0) D=1.0, tower threshold E>1 GeV(CMSSW 1.3.0) A. Heister, D. Kcira, A. Oehler RelVal/2006/9/26/RelVal101BJets50-120/GEN-SIM-DIGI-RECO/  Fast version of kT (FastJET) :  Indeed very fast l à la Iterative Cone  Very interesting, of course also for HI physics  May be considered at HLT level l studies required to examine pros and cons JetMET: status and planGuenther Dissertori

13. Expect this paper already with ~ 10 pb -1 Strongly focused on muon commissioning Understanding of muon efficiency and backgrounds Measurement of W and Z production cross section at 14 TeV in the muon channels EXAMPLES: Isolation efficiency and contamination from data at TEVATRON QCD bkg EWK/W-Z group: status and plans Roberto Tenchini

14. Tau production from W and Z decays at CMS CMS Note-2006/074 Important benchmark for tau reco Interesting to check again BR( W -> tau nu )