关键词: 非相对论夸克势模型/
介子束缚态/
正规化/
质量劈裂
English Abstract
Different time regularization of the Breit quark potential and the mass splittings of c-J/ and other mesons
Jirimutu1,Aodeng1,
Bao tmurbagan2
1.College of Computer and Information, Inner Mongolia Medical University, Hohehot 010110, China;
2.College of Physics and Electronic Information, Inner Mongolia University for the Nationalities, Tongliao 028043, China
Fund Project:Project supported by the Natural Science Foundation of Inner Mongolia Autonomous Region, China (Grant No. 2011MS0116) and Science and Technology Research Project of the Higher Education Institution of Inner Mongolia Autonomous Region, China (Grant No. NJZY11116).Received Date:18 August 2015
Accepted Date:23 November 2015
Published Online:05 February 2016
Abstract:The study on the mass splittings of the mesons with the same structure but different spin-and orbit-quantum numbers is one of the important methods for checking the efficiency of potential models. In previous calculations for quark potential models, the splitting between - is easily obtained while that of the c-J/ is however too small to meet the experimental results. In this paper, the third term of the complete Breit quark potential in the momentum space is regularized twice by applying the form factor 2/(q2+2), and the other terms except the first term of the Coulombic potential and the seventh term of the constant potential are regularized once. The mass splittings are calculated by using these values. Our results indicate that the mass splittings of light mesons -, heavy mesons c-J/, b-(1s), and c0-c1-c2 can meet the experimental results with high accuracy only when the screen mass is expanded to the third-order polynomial with respect to the meson reduced mass r=mr mj/(mr+mj), while the masses of other mesons are improved greatly. An efficient quark potential model is thus described in this paper.
Keywords: nonrelativistic quark potential model/
meson bound states/
regularization/
mass splitting
