Measurement of the B+- production cross-section in pp collisions at sqrt(s)=7 TeV
The LHCb Collaboration: R. Aaij, C. Abellan Beteta, B. Adeva, M., Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, M., Alexander, G. Alkhazov, P. Alvarez Cartelle, A.A. Alves Jr, S. Amato, Y., Amhis, J. Anderson, R.B. Appleby, O. Aquines Gutierrez

TL;DR
This paper reports the measurement of B+- meson production cross-section in proton-proton collisions at 7 TeV using LHCb data, providing detailed differential and total cross-section values within specific kinematic regions.
Contribution
It presents the first measurement of B+- production cross-section at 7 TeV in the specified kinematic range using exclusive decay channels.
Findings
Total cross-section measured as 41.4 ± 1.5 (stat.) ± 3.1 (syst.) μb.
Differential cross-section as a function of transverse momentum.
Results are consistent with theoretical predictions.
Abstract
The production of B+- mesons in proton-proton collisions at sqrt(s)=7 TeV is studied using 35 pb-1 of data collected by the LHCb detector. The B+- mesons are reconstructed exclusively in the B+- -> J/psi K+- mode, with J/psi -> mu+ mu-. The differential production cross-section is measured as a function of the B+- transverse momentum in the fiducial region 0 < pT < 40 GeV/c and with rapidity 2.0 < y < 4.5. The total cross-section, summing up B+ and B-, is measured to be sigma(pp -> B+- X, 0 < pT < 40 GeV/c, 2.0 < y < 4.5) = 41.4 +- 1.5 (stat.) +- 3.1 (syst.) mub.
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