隐色道对奇异数为-1双重子态结构的影响  

The effect of hidden color channel on the structure of strangeness-1 dibaryon

作　　者：戴连荣[1] 黄彩凤[1] 章天歌 林庄 陈鑫 DAI Lianrong;HUANG Caifeng;ZHANG Tiange;LIN Zhuang;CHEN Xin(School of Physics and Electronic Technology,Liaoning Normal University,Dalian116029,China)

机构地区：[1]辽宁师范大学物理与电子技术学院,辽宁大连116029

出　　处：《辽宁师范大学学报（自然科学版）》2018年第4期456-461,共6页Journal of Liaoning Normal University:Natural Science Edition

基　　金：国家自然科学基金资助项目(11575076);国家公派出国留学基金资助项目(201708210057)

摘　　要：自从COSY实验证实了六夸克奇特态ΔΔ双重子存在以来,目前对这一研究得到理论和实验的广泛重视.本组曾提出了手征SU(3)夸克模型并在这一框架下对ΔΔ双重子态进行了正确的预言,与实验结果是一致的.研究表明隐色道(CC)效应对ΔΔ双重子态的影响很大.在此框架下利用共振群(RGM)方法,进一步研究了隐色道效应对奇异数为-1的Σ*Δ双重子自旋单态的影响.结果表明单道计算的结合能为32.2MeV,耦合道时变为39.5MeV,可以看出隐色道耦合对Σ*Δ系统结构有较大影响.Since the confirmation of six-quark exotic stateΔΔby recent COSY experiment,the research has gained extensive attentions from both experimental and theoretical point of views.We has proposed the chiral SU(3)quark model and predicted the binding energy ofΔΔsystem,in which the hidden color channel was shown to play an important role on its structure.In the present work,we further study the structure of strangeness-1dibaryonΣ*Δwithin the framework of the chiral SU(3)quark model by solving the Resonating Group Method equation.The Results show that the binding energy is32.2MeV in single-channel calculation and becomes39.5MeV in coupled-channel calculation.It can be seen that hidden color channel has an important effect on the structure ofΣ*Δsystem.

关 键 词：手征SU(3)夸克模型 双重子 隐色道 

分 类 号：O572.2[理学—粒子物理与原子核物理]