2016/12/31 by LHCb collaboration, R. Aaij, B. Adeva +766 · 1 citation
Physics and Astronomy · #hep-ex
paper · pdf · doi:10.1103/physrevlett.118.052002
published as Phys. Rev. Lett. 118, 052002 (2017) · 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
arxiv created 2018/04/17 · arxiv updated 2018/04/18
Measurements of the cross-section for producing \bquark quarks in the reaction pp→ bb 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~μb and 144± 1± 21~μb for 7 and 13 TeV. The ratio is 2.00±0.02±0.26, 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.