Аннотация

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.

Язык оригиналаанглийский
Номер статьи052005
Число страниц13
ЖурналPhysical Review D
Том95
Номер выпуска5
DOI
СостояниеОпубликовано - 22 мар 2017

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