Chiral dynamics and S-wave contributions in semileptonic D-s/B-s decays into pi(+)pi(-)
Chiral dynamics and S-wave contributions in semileptonic D-s/B-s decays into pi(+)pi(-)
复制标题
半轻子 D-s/B-s 中的手性动力学和 S 波贡献衰减为 pi( )pi(-)
DOI：
10.1103/physrevd.92.074038
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Wang Wei
中科院分区：
文献类型：
--
作者：
Shi Yu-Ji;Wang Wei
In this work, we study the semileptonic decay modesandin the kinematics region where thesystem has a invariant mass in the range 0.5–1.3 GeV. These processes are valuable towards the determination of S-wavelight-cone distribution amplitudes whose normalizations are scalar form factors. We compare the results for scalar form factors predicted in unitarized chiral perturbation theory and extracted from the data on the. Then theandform factors are calculated in light-cone sum rules, based on which predictions for differential decay widths are made. The results are in good agreement with the experimental data on theanddecays into. More accurate measurements at BEPC, LHC and KEKB in the future will be helpful to examine our formalism and constrain the input parameters more precisely.
