Measurement of the B± production asymmetry and the CP asymmetry in B± →j /ψK± decays MEASUREMENT of the B± PRODUCTION ASYMMETRY ... R. AAIJ et al.

(LHCb Collaboration)

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The B± meson production asymmetry in pp collisions is measured using B+→D-0π+ 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<pT<30 GeV/c, and rapidities in the range 2.1<y<4.5 are measured to be Aprod(B+,s=7 TeV)=(-0.41±0.49±0.10)×10-2, Aprod(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/ψK+ decays, thus allowing a measurement of the CP asymmetry, ACP(B+→J/ψK+)=(0.09±0.27±0.07)×10-2.

Original languageEnglish (US)
Article number052005
JournalPhysical Review D
Volume95
Issue number5
DOIs
StatePublished - Mar 1 2017

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asymmetry
decay
transverse momentum
center of mass
mesons
collisions
energy

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Measurement of the B± production asymmetry and the CP asymmetry in B± →j /ψK± decays MEASUREMENT of the B± PRODUCTION ASYMMETRY ... R. AAIJ et al. / (LHCb Collaboration).

In: Physical Review D, Vol. 95, No. 5, 052005, 01.03.2017.

Research output: Contribution to journalArticle

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