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Article
Report number arXiv:1710.04921 ; CERN-EP-2017-254 ; LHCB-PAPER-2017-037 ; LHCB-PAPER-2017-037
Title Measurement of the B± production cross-section in pp collisions at s= 7 and 13 TeV
Related titleMeasurement of the B± production cross-section in pp collisions at s= 7 and 13 TeV
Author(s) LHCb Collaboration  Prikaži svih 800 autora
Publication 2017-12-06
Imprint 17 Oct 2017
Number of pages 22
Note 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-2017-037.html
In: JHEP 1712 (2017) 026
DOI 10.1007/JHEP12(2017)026
Subject category Particle Physics - Experiment ; hep-ex
Accelerator/Facility, Experiment CERN LHC ; LHCb
Free keywords flavor physics ; B physics
Abstract The production of B± mesons is studied in pp collisions at centre-of-mass energies of 7 and 13 TeV, using B±J/ψK± decays and data samples corresponding to 1.0 fb1 and 0.3 fb1, respectively. The production cross-sections summed over both charges and integrated over the transverse momentum range 0<pT<40 GeV/c and the rapidity range 2.0<y<4.5 are measured to be σ(ppB±X,s=7 TeV)=43.0±0.2±2.5±1.7μb, σ(ppB±X,s=13 TeV)=86.6±0.5±5.4±3.4μb, where the first uncertainties are statistical, the second are systematic, and the third are due to the limited knowledge of the B±J/ψK± branching fraction. The ratio of the cross-section at 13 TeV to that at 7 TeV is determined to be 2.02±0.02(stat)±0.12(syst). Differential cross-sections are also reported as functions of pT and y. All results are in agreement with theoretical calculations based on the state-of-art fixed next-to-leading order quantum chromodynamics.
Copyright/License Preprint: © 2017-2024 CERN (License: CC-BY-4.0)



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 Zapis kreiran 2017-10-17, zadnja izmjena 2024-08-17


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