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Measurement of B meson production cross-sections in proton-proton collisions at √s= 7 TeV
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LHCb Collaboration (Including: Back, J. J., Craik, Daniel, Dossett, D., Gershon, T. J., Kreps, Michal, Latham, Thomas, Pilar, T., Poluektov, Anton, Reid, Matthew M., Silva Coutinho, R., Whitehead, M. (Mark) and Williams, M. P.). (2013) Measurement of B meson production cross-sections in proton-proton collisions at √s= 7 TeV. Journal of High Energy Physics, Volume 2013 (Number 8). Article number 117. doi:10.1007/JHEP08(2013)117 ISSN 1029-8479.
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WRAP_LHCb_art%3A10.1007%2FJHEP08%282013%29117.pdf - Published Version Available under License Creative Commons Attribution. Download (828Kb) | Preview |
Official URL: http://dx.doi.org/10.1007/JHEP08(2013)117
Abstract
The production cross-sections of B mesons are measured in pp collisions at a centre-of-mass energy of 7 TeV using data collected with the LHCb detector corresponding to a integrated luminosity of 0.36fb−1. The B+, B0 and B0s mesons are reconstructed in the exclusive decays B+→J/ψK+, B0→J/ψK∗0 and B0s→J/ψϕ, with J/ψ→μ+μ−, K∗0→K+π− and ϕ→K+K−. The differential cross-sections are measured as functions of B meson transverse momentum pT and rapidity y, in the range 0 < pT<40GeV/c2 and 2.0<y<4.5. The integrated cross-sections in the same pT and y ranges, including charge-conjugate states, are measured to be
σ(pp→B++X)=38.9±0.3(stat.)±2.5(syst.)±1.3(norm.)μb,
σ(pp→B0+X)=38.1±0.6(stat.)±3.7(syst.)±4.7(norm.)μb,
σ(pp→B0s+X)=10.5±0.2(stat.)±0.8(syst.)±1.0(norm.)μb,
where the third uncertainty arises from the pre-existing branching fraction measurements.
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