MIT袋模型的一种束缚能跑动形式修正  

The Running Form of Binding Energy Correction for MIT Bag Model

作　　者：刘文念 马奭文 赵新军 张文轩 LIU Wennian;MA Shiwen;ZHAO Xinjun;ZHANG Wenxuan(Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matters,College of Physical Science and Technology,Yili Normal University,Yining 835000,Xinjiang,China;Institute of Theoretical Physics,College of Physics and Electronic Engineering,Northwest Normal University,Lanzhou 730070,China)

机构地区：[1]伊犁师范大学物理科学与技术学院,新疆伊宁835000 [2]西北师范大学物理与电子工程学院,兰州730070

出　　处：《原子核物理评论》2022年第3期296-301,共6页Nuclear Physics Review

基　　金：国家自然科学基金资助项目(22163011);新疆自然科学基金联合基金项目(2019D01C333)

摘　　要：最近,文献[1]在MIT袋模型的基础上引入了一种强耦合常数跑动形式和重夸克束缚能,较好地计算了所有已确认的基态强子谱。考虑到束缚能的贡献之一为重夸克间的短程束缚作用,即色电相互作用,其跑动形式将会取代之前的拟合参数。此跑动形式为类库仑势,随着袋半径R变化,并且在质量公式中参与变分。结果表明,色电相互作用的引入同样会将基态强子质量计算误差控制在大致40 MeV以内,且与拟合参数的方法相比得到了较为准确的结果。这为重夸克色电相互作用的研究提供了参考依据。Recently,Ref.[1]introduced a running form of strongly coupled constant and heavy quark binding energies for MIT bag model,and better calculated all confirmed ground state hadron spectra.Considering that one contribution of binding energy is short-range binding between heavy quark,that is,chromoelectric interaction,a running form will replace the previous fitting parameters.This running form is coulombic potential,which varies with the bag radius R and participates in the variation of mass formula.The results show that the introduction of the chromoelectric interaction will also control the mass error within the approximate 40 MeV,and obtain more accurate results compared with the method of fitting parameters.This provides a reference for the exploration of the chromoelectric interaction between heavy quarks.

关 键 词：袋模型 束缚能 色电相互作用 强子谱 双重重子 

分 类 号：O572.34[理学—粒子物理与原子核物理]