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

-- UrsLangenegger - 2010-05-06