Measurement of the B production asymmetry and the CP asymmetry in B → J=ψK decays
نویسنده
چکیده
s p 1⁄4 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 AprodðBþ; ffiffi s p 1⁄4 7 TeVÞ 1⁄4 ð−0.41 0.49 0.10Þ × 10−2, AprodðBþ; ffiffi s p 1⁄4 8 TeVÞ 1⁄4 ð−0.53 0.31 0.10Þ × 10−2, where the first uncertainties are statistical and the second are systematic. These production asymmetries are used to correct the raw asymmetries of Bþ → J=ψKþ decays, thus allowing a measurement of the CP asymmetry, ACPðBþ → J=ψKþÞ 1⁄4 ð0.09 0.27 0.07Þ × 10−2.
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تاریخ انتشار 2017