The B<sup>0</sup>-B<sup>0</sup> and B<inf>s</inf><sup>0</sup>B<inf>s</inf><sup>0</sup> production asymmetries, A<inf>P</inf>(B<sup>0</sup>) and AP(B<inf>s</inf><sup>0</sup>), are measured by means of a time-dependent analysis of B<sup>0</sup>→J/ψK<sup>*0</sup>, B<sup>0</sup>→D<sup>-</sup>π<sup>+</sup> and B<inf>s</inf><sup>0</sup>→Ds-π+ decays, using a data sample corresponding to an integrated luminosity of 1.0fb<sup>-1</sup>, collected by LHCb in pp collisions at a centre-of-mass energy of 7TeV. The measurements are performed as a function of transverse momentum and pseudorapidity of the B<sup>0</sup> and B<inf>s</inf><sup>0</sup> mesons within the LHCb acceptance. The production asymmetries, integrated over p<inf>T</inf> and η in the range 4<p<inf>T</inf><30GeV/c and 2.5<η<4.5, are determined to be A<inf>P</inf>(B<sup>0</sup>)=(-0.35±0.76±0.28)% and AP(B<inf>s</inf><sup>0</sup>)=(1.09±2.61±0.66)%, where the first uncertainties are statistical and the second systematic.

Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., et al. (2014). Measurement of the B0-bar B0 and Bs0-bar Bs0 production asymmetries in pp collisions at √s = 7TeV. PHYSICS LETTERS. SECTION B, 739, 218-228 [10.1016/j.physletb.2014.10.005].

Measurement of the B0-bar B0 and Bs0-bar Bs0 production asymmetries in pp collisions at √s = 7TeV

Borsato, M;CALVI, MARTA;CASSINA, LORENZO;GOTTI, CLAUDIO;KHANJI, BASEM;KUCHARCZYK, MARCIN;Martinelli, M;
2014

Abstract

The B0-B0 and Bs0Bs0 production asymmetries, AP(B0) and AP(Bs0), are measured by means of a time-dependent analysis of B0→J/ψK*0, B0→D-π+ and Bs0→Ds-π+ decays, using a data sample corresponding to an integrated luminosity of 1.0fb-1, collected by LHCb in pp collisions at a centre-of-mass energy of 7TeV. The measurements are performed as a function of transverse momentum and pseudorapidity of the B0 and Bs0 mesons within the LHCb acceptance. The production asymmetries, integrated over pT and η in the range 4T<30GeV/c and 2.5<η<4.5, are determined to be AP(B0)=(-0.35±0.76±0.28)% and AP(Bs0)=(1.09±2.61±0.66)%, where the first uncertainties are statistical and the second systematic.
Articolo in rivista - Articolo scientifico
Nuclear and High Energy Physics
English
2014
739
218
228
none
Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., et al. (2014). Measurement of the B0-bar B0 and Bs0-bar Bs0 production asymmetries in pp collisions at √s = 7TeV. PHYSICS LETTERS. SECTION B, 739, 218-228 [10.1016/j.physletb.2014.10.005].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/89364
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