B_s → μ⁺ μ^- Analysis

Links

• CVS: HeavyFlavorAnalysis/Bs2MuMu
• CVS: AnalysisDataFormats/HeavyFlavorObjects

Recipes

• How to work with the CMSSW packages: Bs2MuMuCMSSW
• How to analyse the 'ntuples': Bs2MuMuAnalysis
• How to produce the ntuples on a large dataset: Bs2MuMuNtupleProduction
• How to run a MC production: Bs2MuMuMCProduction
• How to run on data with crab: Bs2MuMuAnalysisWithCrab

Tables

• Table with candidates in the NTuple: Bs2MuMuCandidateTable
• Table with chain files: Bs2MuMuChainTable

Task List 2010

Topic	Name	Links	Estimated time
Yield vs. integrated luminosity
Vertexing study (resolution, efficiency; data/MC, pT, phi, eta)	Danek		5
Validation of vertexing in data and MC	Danek		ongoing
Validation and Backup	Jose	Bs2MuMuWinter10Production	ongoing
Validated list of runs			3
Validate pixel/tracker/muon system status			5
Upper limit calculation (in RooStatsCMS?!)
Trigger validation	Urs		DO IT 5
Trigger efficiency:
Trigger efficiency			5
treeBmm and anaBmm code
Systematic errors
sqrt(s)			1
separation of control/normalization channels into other derived classes			5
Script to check all analysis logfiles	Urs		1
Script for T2-production:	Urs	runGrid	done
Run production	Urs	Bs2MuMuMCProduction	ongoing
reweighting of events (pT, I, ...)			2
replication to T2_CH_CSCS or T3_CH_PSI	Urs		done
rare decay truth selector	Urs	HFTruthSelector	done
PV validation	Danek		3
prescale factors
preparation of different ana for signal, normalization, ...			2
pi/K misid rates from b -> mu D0,D+	Lukas/Danek		DO IT (10)
Optimization of cuts			5
Normalization analyses
muon ID efficiency from J/psi, psi(2S), OneS	Bora/Urs		DO IT (10)
Multivariate analysis			10
modular vertex fitting: KVF (mu+ mu-)	Urs		need validation
modular vertex fitting: kinFit (mu+ mu- + n tracks)	Urs		need validation
migration of signal part (signal MC)			DO IT 3
migration of anaTNP and readerTNP	Bora/Urs		done
migrate analysis from HeavyFlavorAnalysis/Examples into Bs2MuMu	Urs	Bs2MuMuCMSSW	done
Measurement of fu/fd/fs			15
MC samples Production
Mass resolution (vs pT, phi, eta, cuts, comparison several samples, data/MC)	Christoph		ongoing (3)
Luminosity (per run, validated)			3
Kaon tracking efficiency			10
J/psi reconstruction with muon+track	Urs	done	done
Isolation
Generate py files for samples	Andrey		done
Data/MC comparison code with sideband subtraction (Bu, Bd, Bs)			DO IT (5)
Data quality
Cross section measurements for Bu, Bd, Bs			15
Continuous ntuple production on data and (min bias) MC			ongoing
Code for expected upper limit vs integrated luminosity			2
Code for expected upper limit			2
CMSSW EDAnalyzers
Bu -> J/psi K+ fitting systematics: reflections, bumps, ...			3
Bs -> mu+ mu- fitting systematics: exponential vs pol1, ...			2
blinding strategy			1
BF(Bu -> J/psi K+) normalized to Bd -> J/psi K*			5
BF(Bs -> J/psi phi) normalized to Bd -> J/psi K*, Bu -> J/psi K+			5
Background study in rare MC samples			5
Analysis tasks
add track quality word	Urs		done
add dE/dx from track	Urs		done
+ validation (data/MC) for Bs -> J/psi phi
+ single muon trigger efficiency			DO IT 5
+ script to check all production logfiles	Urs	monGrid	done
+ run validation jobs for py template files (gen and reco)	Andrey		done
+ ratios of trigger efficiencies			2
+ optimization of definition (with Bs -> J/psi phi)
+ Muon triggers present when muons reconstructed			DO IT
+ Modify PythiaDauFilter: minptcut and maxetacut per daughter			done
+ Matching muon trigger objects to reconstructed muons			DO IT
+ double muon trigger efficiency			DO IT 5
+ comparison of trigger summary report with own trigger results (L1 and HLT)			done
+ Combination of subanalyses (endcaps, barrel)			2
+ Cls implementation and validation			5
+ Change trigger readout to AFTER masking	Urs		done
+ Bs-> mu mu CMSSW_3_8_4 private	Andrey	on SE: starodumov/bsmm/fall10/tree/	done
+ Bs -> mu mu (14 evts)		on starodumov@t3ui02 in ~/CMSSW_3_5_0 ...Bs2MuMu/test/test-local/ - *.py files and in .../test-local/mc and .../test-local/rec *.root files	done
+ Alternatives?! ?
+ L1TT 40 and 41 mirrored in L1? in HLT?			DO IT
Bs2MuMu production for pileup study			DO IT

-- UrsLangenegger - 2010-05-06