Measurement of the B s 0 ? D s ( * ) + D s ( * ) - branching fractions
Measurement of the B s 0 ? D s ( * ) + D s ( * ) - branching fractions
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B s 0 的测量？
DOI：
10.1103/physrevd.93.092008
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发表时间：
2016
影响因子：
5
通讯作者：
Aaij R
中科院分区：
文献类型：
--
作者：
Aaij R
衰变的分支分数是测量使用碰撞数据对应的集成光度，收集使用LHCb探测器在质心能量为7 TeV。结果表明：B（Bs 0 →Ds（*）+Ds（*）-）=（3.05±0.10±0.20±0.34）%，其中不确定度分别为统计不确定度、系统不确定度和归一化通道不确定度。还测量了对应于一个或两个衰变存在的各个衰变的分支分数。单支化率为B（Bs 0 →Ds*±Ds *）=（1.35±0.06±0.09±0.15）%，B（Bs 0 →Ds*+Ds*-）=（1.27±0.08±0.10±0.14）%。这三个结果都是迄今为止最精确的测定。
The branching fraction of the decayis measured usingcollision data corresponding to an integrated luminosity of, collected using the LHCb detector at a center-of-mass energy of 7 TeV. It is found to be B(Bs0→Ds(*)+Ds(*)-)=(3.05±0.10±0.20±0.34)%, where the uncertainties are statistical, systematic, and due to the normalization channel, respectively. The branching fractions of the individual decays corresponding to the presence of one or twoare also measured. The individual branching fractions are found to be B(Bs0→Ds*±Ds∓)=(1.35±0.06±0.09±0.15)%, B(Bs0→Ds*+Ds*-)=(1.27±0.08±0.10±0.14)%. All three results are the most precise determinations to date.