PI/LHCb presentation - LHCb - Cern

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Particle Identification: trigger, flavour tagging & B candidate selection Stephanie Hansmann-Menzemer 102 nd LHCC Meeting, 07.07.2010 20
Muon ID Performance MuonID efficiency can be estimated from data with J/ψ with the “tag and probe” method mis-ID tested using K s →ππ, Λ→pπ and Φ→KK P(π→μ): 2.35 ± 0.04 (stat) % P(p→μ): 3.1 ± 0.2 (stat) % P(K→μ): 1.67 ± 0.06 (stat) % (in good data/MC agreement) → ready for J/ψ cross-section analysis L = 14 nb -1 ε(μ) = 97.3 ± 1.2 (stat)% very good agreement! Stephanie Hansmann-Menzemer 102 nd LHCC Meeting, 07.07.2010 21
Page 1 and 2: Tracking Report Stephanie Hansmann-
Page 3 and 4: Trigger and Data Taking Stephanie H
Page 5 and 6: Pile-up system Calorimeter Muon sys
Page 7 and 8: HLT1 minimum bias HLT1 physics pass
Page 9 and 10: GRID-Computing data successfully sh
Page 11 and 12: Vertex Locator precision measuremen
Page 13 and 14: new alignment including z translati
Page 15 and 16: Silicon Tracker IT 98.6% of channel
Page 17 and 18: Invariant Mass Resolution Very prec
Page 19: D → Kπππ D → Kπ Tracking Ef
Page 23 and 24: Electron Identification J/ψ→ ee
Page 25 and 26: RICH 1: aerogel Single Photon Resol
Page 27 and 28: D * →D°(Kπ)π L = 2.7 nb -1 RIC
Page 29 and 30: Luminosity Measurement (some modifi
Page 31 and 32: 900 GeV 7 TeV Strange Hadron Ratios
Page 33 and 34: - clear contribution from D from b
Page 35: LHCb in very good shape! Conclusion

PI/LHCb presentation - LHCb - Cern

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