A New Determination of the Lambda-Nucleon Coupling Constants in Relativistic Mean Field Theory  

作　　者：王小素 桑红毅 王家慧 吕洪风 

机构地区：[1]College of Science, China Agriculture University

出　　处：《Communications in Theoretical Physics》2013年第10期479-484,共6页理论物理通讯（英文版）

基　　金：Supported by Chinese Universities Scientific Fund under Grant No.2011JS050

摘　　要：A new determination of the Lambda-nucleon coupling constants in relativistic mean field theory is presented by optimizing both hyperon binding energy and spin-orbit splitting, ttypernuclear single particle spectra with the new coupling constants suggest the good agreement between the calculation and available data. The spin-orbit splitting of hyperon in medium mass hypernuclei is systematically larger than that in light- or heavy-mass hypernuclei. The sensitivity of the Lambda spin-orbit splitting to the omega-Lambda-Laznbda tensor coupling term is also explored.

关 键 词：effective Lambda-nucleon interaction relativistic mean field theory single particle spectra 

分 类 号：O412.1[理学—理论物理] O571[理学—物理]