A Primary Study of Heavy Baryons ΛQ, ΣQ, ΞQ and ΩQ  

作　　者：ZHAO Qiao-Yan ZHANG Dan ZHANG Qiu-Yang 赵巧燕;张丹;张秋阳(School of Physical Science and Technology,Inner Mongolia University,Hohhot 010021;Graduate School of Zhejiang Gongshang University,Hangzhou 310018)

机构地区：[1]School of Physical Science and Technology,Inner Mongolia University,Hohhot 010021 [2]Graduate School of Zhejiang Gongshang University,Hangzhou 310018

出　　处：《Chinese Physics Letters》2011年第7期77-80,共4页中国物理快报（英文版）

基　　金：by the China Postdoctoral Science Foundation Funded Project(20100471491);the Natural Science Foundation of Inner Mongolia(2010MS0101);the Inner Mongolia Educational Foundation(NJzy08006),SPH-IMU(Z20090143);the Graduate Program of Inner Mongolia University.

摘　　要：We perform a preliminary study of the 1/2+and 3/2+ground−state baryons containing a heavy quark in the framework of the chiral SU(3)quark model.By using the calculus of variations,masses ofΛQ,ΣQ,ΞQ,ΩQ,ΣQ*,ΞQ*andΩQ*,where Q means c or b quark,are calculated.By taking reasonable model parameters,the numerical results of established heavy baryons are generally in agreement with the experimental data available,except that those ofΞQ are somewhat heavier.ForΩb with undetermined experimental mass and unobservedΞ_(b)*,Ω_(b)*,reasonable theoretical predictions are obtained.Interactions inside baryons are also discussed.

关 键 词：QUARK SU(3) CHIRAL 

分 类 号：O57[理学—粒子物理与原子核物理]