Measurement of the <i>b</i>- Quark Production Cross Section in 7 and 13 TeV <i>pp</i> Collisions



Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G
et al (show 760 more authors) (2017) Measurement of the <i>b</i>- Quark Production Cross Section in 7 and 13 TeV <i>pp</i> Collisions. PHYSICAL REVIEW LETTERS, 118 (5). 052002-.

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Abstract

Measurements of the cross section for producing b quarks in the reaction pp→bb[over ¯]X are reported in 7 and 13 TeV collisions at the LHC as a function of the pseudorapidity η in the range 2<η<5 covered by the acceptance of the LHCb experiment. The measurements are done using semileptonic decays of b-flavored hadrons decaying into a ground-state charmed hadron in association with a muon. The cross sections in the covered η range are 72.0±0.3±6.8 and 154.3±1.5±14.3  μb for 7 and 13 TeV. The ratio is 2.14±0.02±0.13, where the quoted uncertainties are statistical and systematic, respectively. The agreement with theoretical expectation is good at 7 TeV, but differs somewhat at 13 TeV. The measured ratio of cross sections is larger at lower η than the model prediction.

Item Type: Article
Additional Information: This version incorporates the Errata and presents only the updated measurements. Erratum added on Sept. 1, 2017. Please use for 13 TeV cross-sections and cross-section ratios. All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2016-031.html
Uncontrolled Keywords: LHCb Collaboration
Depositing User: Symplectic Admin
Date Deposited: 24 Feb 2017 13:47
Last Modified: 12 Oct 2023 03:47
DOI: 10.1103/PhysRevLett.118.052002
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3006050