The anti-B0 B0 and anti-B0s B0s production asymmetries, A_P(B0) and A_P(B0s), are measured by means of a time-dependent analysis of B0 → J/ψ K⁎0, B0 → D− π+ and B0s → Ds− π+ decays, using a data sample corresponding to an integrated luminosity of 1.0 fb^−1, collected by LHCb in pp collisions at a centre-of-mass energy of 7 TeV. The measurements are performed as a function of transverse momentum and pseudorapidity of the B0 and B0s mesons within the LHCb acceptance. The production asymmetries, integrated over p_T and η in the range 4 < p_T < 30 GeV/c and 2.5 < η < 4.5, are determined to be A_P(B0) = (−0.35 ± 0.76 ± 0.28)% and A_P(B0s) = (1.09 ± 2.61 ± 0.66)%, where the first uncertainties are statistical and the second systematic.

R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, et al. (2014). Measurement of the anti-B0 B0 and anti-B0s B0s Production Asymmetries in pp Collisions at √s = 7 TeV. PHYSICS LETTERS. SECTION B, 739, 218-228 [10.1016/j.physletb.2014.10.005].

Measurement of the anti-B0 B0 and anti-B0s B0s Production Asymmetries in pp Collisions at √s = 7 TeV

CARBONE, ANGELO;GALLI, DOMENICO;MOGGI, NICCOLO';MUSSINI, MANUEL;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZANGOLI, MARIA;
2014

Abstract

The anti-B0 B0 and anti-B0s B0s production asymmetries, A_P(B0) and A_P(B0s), are measured by means of a time-dependent analysis of B0 → J/ψ K⁎0, B0 → D− π+ and B0s → Ds− π+ decays, using a data sample corresponding to an integrated luminosity of 1.0 fb^−1, collected by LHCb in pp collisions at a centre-of-mass energy of 7 TeV. The measurements are performed as a function of transverse momentum and pseudorapidity of the B0 and B0s mesons within the LHCb acceptance. The production asymmetries, integrated over p_T and η in the range 4 < p_T < 30 GeV/c and 2.5 < η < 4.5, are determined to be A_P(B0) = (−0.35 ± 0.76 ± 0.28)% and A_P(B0s) = (1.09 ± 2.61 ± 0.66)%, where the first uncertainties are statistical and the second systematic.
2014
R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, et al. (2014). Measurement of the anti-B0 B0 and anti-B0s B0s Production Asymmetries in pp Collisions at √s = 7 TeV. PHYSICS LETTERS. SECTION B, 739, 218-228 [10.1016/j.physletb.2014.10.005].
R. Aaij; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; S. Akar; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/372768
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