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Measurement of the track reconstruction efficiency at LHCb

Abstract : The determination of track reconstruction efficiencies at LHCb using $J/\psi\rightarrow\mu^{+}\mu^{-}$ decays is presented. Efficiencies above $95\%$ are found for the data taking periods in 2010, 2011, and 2012. The ratio of the track reconstruction efficiency of muons in data and simulation is compatible with unity and measured with an uncertainty of $0.8\,\%$ for data taking in 2010, and at a precision of $0.4\,\%$ for data taking in 2011 and 2012. For hadrons an additional $1.4\,\%$ uncertainty due to material interactions is assumed. This result is crucial for accurate cross section and branching fraction measurements in LHCb.
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http://hal.in2p3.fr/in2p3-01054533
Contributor : Sabine Starita <>
Submitted on : Thursday, August 7, 2014 - 11:07:13 AM
Last modification on : Friday, November 20, 2020 - 3:30:14 PM

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R. Aaij, Y. Amhis, S. Barsuk, M. Borsato, O. Kochebina, et al.. Measurement of the track reconstruction efficiency at LHCb. Journal of Instrumentation, IOP Publishing, 2015, 10, pp.P02007. ⟨10.1088/1748-0221/10/02/P02007⟩. ⟨in2p3-01054533⟩

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