Observation of B_{s}^{0}?D[over ¯]^{0}K_{S}^{0} and Evidence for B_{s}^{0}?D[over ¯]^{*}^{0}K_{S}^{0} Decays.
Observation of B_{s}^{0}?D[over ¯]^{0}K_{S}^{0} and Evidence for B_{s}^{0}?D[over ¯]^{*}^{0}K_{S}^{0} Decays.
复制标题
B_{s}^{0}?D[over Ÿ]^{0}K_{S}^{0} 的观察和 B_{s}^{0}?D[over Ÿ]^{*
DOI：
10.1103/physrevlett.116.161802
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发表时间：
2016
影响因子：
8.6
通讯作者：
Aaij R
中科院分区：
文献类型：
--
作者：
Aaij R
本文报道了衰变模式的首次观测和衰变模式的证据。数据样本对应于LHCb在质心能量为7和8 TeV时收集的碰撞积分光度。测得支化分数为B（Bs0→D <$0K <$0）=[4.3±0.5（stat）± 0.3（syst）± 0.3（frag）±0.6（norm）]×10-4，B（Bs 0 →D <$* 0 K <$0）=[2.8±1.0（stat）±0.3（syst）±0.2（frag）±0.4（norm）]×10-4，其中不确定度是由于统计精度、系统效应和两个外部输入的精度的贡献，的比率和分支分数，其用作校准通道。
The first observation of thedecay mode and evidence for thedecay mode are reported. The data sample corresponds to an integrated luminosity ofcollected incollisions by LHCb at center-of-mass energies of 7 and 8 TeV. The branching fractions are measured to be B(Bs0→D¯0K¯0)=[4.3±0.5(stat)±0.3(syst)±0.3(frag)±0.6(norm)]×10-4,B(Bs0→D¯*0K¯0)=[2.8±1.0(stat)±0.3(syst)±0.2(frag)±0.4(norm)]×10-4,where the uncertainties are due to contributions coming from statistical precision, systematic effects, and the precision of two external inputs, the ratioand the branching fraction of, which is used as a calibration channel.