Measurement of the CKM angle γ with Bs0 → Ds∓K± decays

被引：0
作者：
Dziurda, Agnieszka [1 ]
机构：
[1] PAS, Henryk Niewodniczanski Inst Nucl Phys, Krakow, Poland
来源：
NUCLEAR AND PARTICLE PHYSICS PROCEEDINGS | 2016年 / 273卷
关键词：
CP-VIOLATION;
D O I：
10.1016/j.nuclphysbps.2015.09.219
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
This document reports the first measurements of the time-dependent CP violating observables in B-s(0) -> (DsK +/-)-K--/+ decays. The measurements are performed using data corresponding to an integrated luminosity of 1 fb(-1) collected in 2011 by the LHCb detector. The CP violating observables: C-f = 0.53 +/- 0.25 +/- 0.04, A(f)(Delta Gamma) = 0.37 +/- 0.42 +/- 0.20, A((f) over bar)(Delta Gamma) = 0.20 +/- 0.41 +/- 0.20, S-f = 1.09 +/- 0.33 +/- 0.08, S-(f) over bar = 0.36 +/- 0.34 +/- 0.08 are found, where the uncertainties are statistical and systematic. Later, these observables are used to deterimine the CKM angle gamma from B-s(0) -> (DsK +/-)-K--/+ decays. A gamma value of (115(-43)(+28))degrees modulo 180 degrees at 68% CL is found, where the uncertainty contains both statistical and systematic components.
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页码：1358 / 1363
页数：6
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