Measurement of B meson production cross-sections in proton-proton collisions at √=7 TeV

作者：Aaij R.; Beteta C.A.; Adeva B.; Adinolfi M.; Adrover C.; Affolder A.; Ajaltouni Z.; Albrecht J.; Alessio F.; Alexander M.; Ali S.; Alkhazov G.; Cartelle P.A.; Alves A.A.; Amato S.; Amerio S.; Amhis Y.; Anderlini L.; Anderson J.; Andreassen R.; Appleby R.B.; Gutierrez O.A.; Archilli F.; Artamonov A.; Artuso M.; Aslanides E.; Auriemma G.; Bachmann S.; Back J.J.; Baesso C.; Balagura V.; Baldini W.; Barlow R.J.; Barschel C.; Barsuk S.; Barter W.; Bauer T.; Bay A.; Beddow J.; Bedeschi F.; Bediaga I.

来源：Journal of High Energy Physics, 2013, 2013(8).

• Hadron-Hadron Scattering
• Heavy quark production

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 0.36 fb-1. The B +, B 0 and Bs 0 mesons are reconstructed in the exclusive decays B + → J/ψK +, B 0 → J/ψK *0 and B s 0→ 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 p T and rapidity y, in the range 0 < p T < 40 GeV/c and 2.0 < y < 4.5. The integrated cross-sections in the same p T 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, (pp ± Bs0.

• 出版日期2013
• 单位清华大学