Light axion-like particles and the pseudoscalar mesonic decays M→M′vv  

作　　者：Guo-Qiang Dai Chong-Xing Yue Yang-Yang Bu Yi-Hang Wang 

机构地区：[1]Department of physics,Liaoning Normal University,Dalian 116029,China [2]Center for Theoretical and Experimental High Energy Physics,Liaoning Normal University,Dalian 116029,China

出　　处：《Communications in Theoretical Physics》2024年第9期37-41,共5页理论物理通讯（英文版）

基　　金：partially supported by the National Natural Science Foundation of China under Grant Nos.11875157 and 12147214。

摘　　要：The axion-like particle(ALP)is one kind of the best-motivated new particles.We consider its production from the pseudoscalar mesonic decays M→M′a,with M being a pseudoscalar meson B or K.The upper limits on the flavor-conserving ALP–quark coupling parameter guare obtained by assuming the ALP to be an invisible particle.We find that the most severe constraint on gucomes from the decay K^(+)→π^(+)vv for 0.05 Ge V≤M_(a)≤0.35 Ge V,while the decays B^(+,0)→K^(+,0)vvand B^(+,0)→π^(+,0)υvcan also generate significant constraints.

关 键 词：axion-like particle pseudoscalar mesons branching ratios 

分 类 号：O572.3[理学—粒子物理与原子核物理]