TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Garcia Martin, L. M.
AU  - Henry, L.
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Remon Alepuz, C.
AU  - Ruiz Valls, P.
AU  - Ruiz Vidal, J.
AU  - Sanchez Mayordomo, C.
PY  - 2017
DA  - 2017//
TI  - Measurement of the B-+/- production cross-section in pp collisions at root s=7 and 13 TeV
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 026
EP  - 25pp
VL  - 12
IS  - 12
PB  - Springer
KW  - B physics
KW  - Hadron-Hadron scattering (experiments)
KW  - Particle and resonance production
AB  - The production of B +/- mesons is studied in pp collisions at centre-of-mass energies of 7 and 13 TeV, using B-+/- -> J/psi K-+/- decays and data samples corresponding to 1.0 fb(-1) and 0.3 fb(-1), 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 sigma-(pp -> B-+/- X, root s = 7 TeV) = 43.0 +/- 0.2 +/- 2.5 +/- 1.7 μb, sigma(pp -> B-+/- X, root s = 13 TeV) = 86.6 +/- 0.5 +/- 5.4 +/- 3.4 μb, where the first uncertainties are statistical, the second are systematic, and the third are due to the limited knowledge of the B-+/- -> J/psi K-+/- 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 pi, and y. All results are in agreement with theoretical calculations based on the state-of-art fixed next-to-leading order quantum chromodynamics.
SN  - 1029-8479
UR  - http://arxiv.org/abs/1710.04921
UR  - https://doi.org/10.1007/JHEP12(2017)026
DO  - 10.1007/JHEP12(2017)026
LA  - English
N1  - WOS:000417757900004
ID  - LHCbCollaborationAaij_etal2017
ER  -