1) branching ratio
分支比
1.
Measurement of branching ratios of Pd I;
钯原子谱线的分支比测量
2.
Predissociation of the RbHe(E) state and branching ratio of the Rb 5 p~2 P_j fine structure levels;
RbHe(E)态的预离解和Rb 5 p~2P_J精细结构能级分支比
3.
The branching ratios N(Br*)/N(Br) of the compounds at two wavelengths were measured, and the relationships between the branching ratio and the photolysis wave-lengths and among the potential energy surfaces of the low excited states were explained based on our ab initio calculations.
测出了这几种含溴化合物在不同波长下光解产物Br*和Br的分支比(Br*)(Br)NN,并根据从头计算结果,解释了这几种含溴化合物光解产物的分支比随光解波长变化的趋势及几个低激发态势能面之间的关系。
2) branching fraction
分支比
1.
Three methods to estimate the ratio of the branching fractions of J/(?) and (?)′decays are also discussed.
描述并讨论了三种估算(?)′和J/(?)衰变分支比比值的方法。
2.
We report a measurement of the absolutely inclusive semileptonic branching fractions of D - and D 0 mesons, using a data sample of 22.
3pb- 1的数据 ,测量了带电及中性D介子的单举半轻子 (电子 )衰变的分支比 。
3.
9keV;the branching fractions Γh/Γ=(87.
利用北京正负电子对撞机（ＢＥＰＣ）和北京谱仪（ＢＥＳ），测量了ｅ＋ｅ-对撞束在Ｊ／ψ共振峰附近能区内末态为强子、ｅ＋ｅ-和μ＋μ-的实验观测截面，对这些截面的拟合得到Ｊ／ψ衰变宽度和分支比的新的实验测定值：Γ＝８４。
3) branch ratio
分支比
1.
As a result,the calculation of form factor is more precise and the branch ratio is consistent with the experimental data.
计算得到的分支比与最近的实验数据相一致。
2.
In the framework of quantum chromo dynamics(QCD) sum rule, this paper discusses in details that exchange of soft gluon contributes to decay amplitude in B~0→K~0π~0 decay and the hadronic matrix element and branch ratio about B~0→K~0π~0 decay were studied systematically.
在光锥QCD求和规则框架内,详细讨论在B0→K0π0衰变中软胶子交换对衰变振幅的贡献,系统地研究B0→K0π0衰变过程的强子矩阵元并计算了分支比,计算结果与实验结果相一致。
3.
In this paper, the hadronic matrix element and branch ratio are calculated in QCD factorization and light cone QCD sum rules in B -→π -π 0 decays, and the result is in agreement with the experiment data.
本文用 QCD因子化和光锥 QCD求和规则系统地计算了 B- →π0 π- 衰变过程的强子矩阵元和分支比 ,其计算结果与实验相一致 。
4) branching ratios
分支比
1.
We find that the branching ratios Br(τ?→l-jν-τ-τ) are larger than the branching ratios Br(τ?→l-jν-l-l) in all of the parameter space.
结果表明 ,在整个参数空间内 ,过程τ± →ljντ ντ 的分支比比τ± →ljνl νl(l =μ ,e)的分支比大得多 。
2.
Their branching ratios are obtained.
本文用QCD因子化方法,对Bc→J/ψπ,ηcπ,J/ψK,ηcK进行唯象研究,给出它们的分支比,并对理论预言的不确定性进行分析。
5) branch ratio R
分支比R
6) the branching ratio Rb
分支比R_b
补充资料：分支比
分子式：
CAS号：
性质：分支衰变的放射性核素的一个原子核在单位时间内按指定方式衰变的概率λi与该原子核在单位时间内的总衰变概率λ之比。通常用Ri表示，Ri=λi/λ。
CAS号：
性质：分支衰变的放射性核素的一个原子核在单位时间内按指定方式衰变的概率λi与该原子核在单位时间内的总衰变概率λ之比。通常用Ri表示，Ri=λi/λ。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条