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Identification of beauty and charm quark jets at LHCb

Abstract : Identification of jets originating from beauty and charm quarks is important for measuring Standard Model processes and for searching for new physics. The performance of algorithms developed to select b- and c-quark jets is measured using data recorded by LHCb from proton-proton collisions at s√=7 TeV in 2011 and at s√=8 TeV in 2012. The efficiency for identifying a b(c) jet is about 65\%(25\%) with a probability for misidentifying a light-parton jet of 0.3\% for jets with transverse momentum pT>20 GeV and pseudorapidity 2.2<η<4.2. The dependence of the performance on the pT and η of the jet is also measured.
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Submitted on : Thursday, April 30, 2015 - 11:02:32 AM
Last modification on : Thursday, December 16, 2021 - 2:11:20 PM

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R. Aaij, Y. Amhis, S. Barsuk, M. Borsato, O. Kochebina, et al.. Identification of beauty and charm quark jets at LHCb . Journal of Instrumentation, IOP Publishing, 2015, 10 (6), pp.P06013. ⟨10.1088/1748-0221/10/06/P06013⟩. ⟨in2p3-01147357⟩



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