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Inclusive b-hadron production cross section with muons in pp collisions at lass="latex">lass="ss"> l">脰s = 7 \textTeV lass="cs">lass="math"> \sqrt {s} = 7\;{\text{TeV}}
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摘要
A measurement of the b-hadron production cross section in proton-proton collisions at 脰s = 7 \textTeV \sqrt {s} = 7\;{\text{TeV}} is presented. The dataset, corresponding to 85 nb−1, was recorded with the CMS experiment at the LHC using a low-threshold single-muon trigger. Events are selected by the presence of a muon with transverse momentum $ p_T^\mu > 6\;{\text{GeV}} $ p_T^\mu > 6\;{\text{GeV}} with respect to the beam direction and pseudorapidity |η μ | < 2.1. The transverse momentum of the muon with respect to the closest jet discriminates events containing b hadrons from background. The inclusive b-hadron production cross section is presented as a function of muon transverse momentum and pseudorapidity. The measured total cross section in the kinematic acceptance is σ(pp → b + X → μ + X′) = 1.32 卤 0.01(stat) 卤 0.30(syst) 卤 0.15(lumi)μb.

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