首页|Probing axion-like particles in leptonic decays of heavy mesons
Probing axion-like particles in leptonic decays of heavy mesons
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
We study the possibility of finding axion-like particles(ALPs)through the leptonic decays of heavy mesons.The Standard Model(SM)predictions of the branching ratios of the leptonic decays of heavy mesons are less than the corresponding experimental upper limits.This provides some room for the existence of decay channels,of which the ALP is one of the products.Three scenarios are considered:First,the ALP is only coupled to one single charged fermion,namely,the quark,the antiquark,or the charged lepton;second,the ALP is only coupled to quark and antiquark with the same strength;and third,the ALP is coupled to all the charged fermions with the same strength.The constraints of the coupling strength in different scenarios are obtained by comparing the experimental data of the branching ratios of leptonic decays of B-,D+,and Ds+mesons with the theoretical predictions achieved by using the Bethe-Salpeter(BS)method.These constraints are further applied to predict the upper limits of the leptonic decay processes of the Bc-meson in which the ALP participates.
heavy mesonBS equationaxion
杨钢、王天鸿、王国利
展开 >
School of Physics,Harbin Institute of Technology,Harbin 150001,China
Department of Physics,Hebei University,Baoding 071002,China
NETL
NSTL
万方数据
