Chiral effective Lagrangian for excited heavy-light mesons from QCD  

作　　者：Qing-Sen Chen Hui-Feng Fu Yong-Liang Ma Qing Wang 

机构地区：[1]Center for Theoretical Physics,College of Physics,Jilin University,Changchun 130012,China [2]School of Fundamental Physics and Mathematical Sciences,Hangzhou Institute for Advanced Study,UCAS,Hangzhou,310024,China [3]International Center for Theoretical Physics Asia-Pacific(ICTP-AP)(Beijing/Hangzhou),UCAS,Beijing 100190,China [4]Department of Physics,Tsinghua University,Beijing 100084,China [5]Center for High Energy Physics,Tsinghua University,Beijing 100084,China

出　　处：《Communications in Theoretical Physics》2021年第6期94-101,共8页理论物理通讯（英文版）

基　　金：supported in part by National Science Foundation of China(NSFC)under Grant No.11875147 and No.11475071;supported by NSFC under Grant No.12047569;supported by the National Science Foundation of China(NSFC)under Grant No.11475092。

摘　　要：We derive the chiral effective Lagrangian for excited heavy-light mesons from QCD under proper approximations.We focus on the chiral partners with j_(l)^(P)=3+/2 and j_(l)^(P)=3-/2 which amounts to(1^(+),2^(+))and(1^(-),2^(-))states respectively.The low energy constants including the masses of the chiral partners are calculated.The calculated spectrum for the excited mesons are found roughly consistent with experimental data.In addition,our results indicate that quantum numbers of B_(J)(5970)can be identified with 1^(-)or 2^(-).

关 键 词：chiral effective Lagrangian heavy-light meson QCD chiral partner 

分 类 号：O572.33[理学—粒子物理与原子核物理]