Measurement of the B0B0 and Bs0Bs0 production asymmetries in pp collisions at √s = 7TeV

LHCb Collaboration

Research output: Contribution to journalArticle

30 Scopus citations

Abstract

The B<sup>0</sup>-B<sup>0</sup> and B<sub>s</sub><sup>0</sup>B<sub>s</sub><sup>0</sup> production asymmetries, A<sub>P</sub>(B<sup>0</sup>) and AP(B<sub>s</sub><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<sub>s</sub><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<sub>s</sub><sup>0</sup> mesons within the LHCb acceptance. The production asymmetries, integrated over p<sub>T</sub> and η in the range 4<p<sub>T</sub><30GeV/c and 2.5<η<4.5, are determined to be A<sub>P</sub>(B<sup>0</sup>)=(-0.35±0.76±0.28)% and AP(B<sub>s</sub><sup>0</sup>)=(1.09±2.61±0.66)%, where the first uncertainties are statistical and the second systematic.

Original languageEnglish (US)
Pages (from-to)218-228
Number of pages11
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume739
DOIs
StatePublished - Dec 2 2014

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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