摘要
基于DsJ(3040)粒子性质尚未确定这一课题,利用组分夸克模型(CQM),研究半轻衰变过程BS→DSJ(3040)lv.认为DsJ(3040)是由C和;组成的激发态,它的自旋一宇称为J’=1’,s1=3/2,属于T类型的双重态(1’,2’).理论计算得到了数值结果,其分支比为0.9%~2.7%,这对最终确定D町(3040)的性质、检验CQM模型的合理性有重要意义.
The characteristic of the Dsj (3040) has not confirmed. Based on the assumption that the ex- otic state DSJ (3040) is constituted by c s with JP= 1+ and st = 3/2,and belongs to T doublet (1+ ,2+) ,the semilepton decay BS→DSJ (3040)lv is studied by the CQM model. The numerical results are obtained and the branching ratios range from 0.9% to 2.7 %. This work is in favour of confirming the characteristic of the DSJ (3040) ,and checking the rationality of the CQM model.
出处
《河北师范大学学报(自然科学版)》
CAS
北大核心
2014年第1期46-49,共4页
Journal of Hebei Normal University:Natural Science
基金
国家自然科学基金(11047002)
河北省自然科学基金(A2011201118)