弦模型图像下的重味强子谱:短程束缚  

Heavy flavor hadron spectrum in string model picture: short-range binding

作　　者：贾多杰[1] 姬黎莹 刘文念 董文超 JIA Duo-jie;JI Li-ying;LIU Wen-nian;DONG Wen-chao(College of Physics and Electronic Engineering,Northwest Normal University,Lanzhou 730070,Gansu,China)

机构地区：[1]西北师范大学物理与电子工程学院

出　　处：《西北师范大学学报（自然科学版）》2019年第5期21-28,43,共9页Journal of Northwest Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(11565023);甘肃省飞天特聘教授项目

摘　　要：对单重味强子质量中短程束缚的起源进行了研究.结果表明,在单重味强子Regge公式中加入与约化质量成正比的束缚能之后,可以对实验上已有的单重强子质量进行普适的描述,且可以预言实验上没有探测到的单重强子质量.此外,本文证实单重强子(包括奇异味强子)束缚能与夸克间短程色库仑吸引力有关.This paper explores the origin of extra heavy flavor binding in heavy flavor hadron spectrum.The results show that in the Regge formula of singly heavy hadron adding of one extra heavy flavor binding that is proportional to the reduced mass enables one to unifiedly describe to masses of the existing single heavy hadrons,and the formula can predicts some of singly heavy baryons that were not established experimentally.In addition,this work quantitatively confirm that such an extra binding energy between heavy flavors(including strange flavor) is related to the short-range colour Coulomb attraction between quarks.

关 键 词：单重强子质量 朴素夸克模型 弦模型图像 短程束缚 

分 类 号：O413.3[理学—理论物理]