The B± meson production asymmetry in pp collisions is measured using B+ → anti-D0 π+ decays. The data were recorded by the LHCb experiment during Run 1 of the LHC at center-of-mass energies of √s = 7 and 8 TeV. The production asymmetries, integrated over transverse momenta in the range 2 < p_T < 30 GeV/c, and rapidities in the range 2.1 < y < 4.5 are measured to be A_prod(B+, √s = 7 TeV) = (−0.41 ± 0.49 ± 0.10) × 10^−2, A_prod(B+, √s = 8 TeV) = (−0.53 ± 0.31 ± 0.10) × 10^−2, where the first uncertainties are statistical and the second are systematic. These production asymmetries are used to correct the raw asymmetries of B+ → J/ψ K+ decays, thus allowing a measurement of the CP asymmetry, A_CP(B+ → J/ψ K+) = (0.09 ± 0.27 ± 0.07) × 10^−2.

Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Measurement of the B± Production Asymmetry and the CP Asymmetry in B± → J/ψ K± Decays. PHYSICAL REVIEW D, 95(5), 1-13 [10.1103/PhysRevD.95.052005].

Measurement of the B± Production Asymmetry and the CP Asymmetry in B± → J/ψ K± Decays

BETTI, FEDERICO;Capriotti, L.;CARBONE, ANGELO;FERRARI, FABIO;GALLI, DOMENICO;MUSSINI, MANUEL;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZUCCHELLI, STEFANO
2017

Abstract

The B± meson production asymmetry in pp collisions is measured using B+ → anti-D0 π+ decays. The data were recorded by the LHCb experiment during Run 1 of the LHC at center-of-mass energies of √s = 7 and 8 TeV. The production asymmetries, integrated over transverse momenta in the range 2 < p_T < 30 GeV/c, and rapidities in the range 2.1 < y < 4.5 are measured to be A_prod(B+, √s = 7 TeV) = (−0.41 ± 0.49 ± 0.10) × 10^−2, A_prod(B+, √s = 8 TeV) = (−0.53 ± 0.31 ± 0.10) × 10^−2, where the first uncertainties are statistical and the second are systematic. These production asymmetries are used to correct the raw asymmetries of B+ → J/ψ K+ decays, thus allowing a measurement of the CP asymmetry, A_CP(B+ → J/ψ K+) = (0.09 ± 0.27 ± 0.07) × 10^−2.
2017
Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Measurement of the B± Production Asymmetry and the CP Asymmetry in B± → J/ψ K± Decays. PHYSICAL REVIEW D, 95(5), 1-13 [10.1103/PhysRevD.95.052005].
Aaij, R.; Adeva, B.; Adinolfi, M.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Alvarez Cartelle, P.; Alv...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/584413
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