Understanding the structure of d*(2380) in chiral quark model

doi:10.1007/s11433-015-5767-3

IHEP OpenIR > 院士

	*Understanding the structure of d(2380) in chiral quark model**
	Huang, F; Shen PN(沈彭年); Dong YB(董宇兵); Zhang ZY(张宗烨); Shen, PN; Dong, YB; Zhang, ZY
	2016
发表期刊	SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY (IF:2.237[JCR-2016],1.265[5-Year])
ISSN	1674-7348
EISSN	1869-1927
卷号	59 期号:2 页码:622002
文章类型	Article
摘要	The structure and decay properties of d* have been detailedly investigated in both the chiral SU(3) quark model and the extended chiral SU(3) quark model that describe the energies of baryon ground states and the nucleon-nucleon (NN) scattering data satisfactorily. By performing a dynamical coupled-channels study of the system of Delta Delta and hidden-color channel (CC) with quantum numbers I(J(P)) = 0(3(+)) in the framework of the resonating group method (RGM), we find that the d* has a mass of about 2.38-2.42 GeV and a root-mean-square radius (RMS) of about 0.76-0.88 fm. The channel wave function is extracted by a projection of the RGM wave function onto the physical basis, and the fraction of CC component in the d* is found to be about 66%-68%, which indicates that the d* is a hexaquark-dominated exotic state. Based on this scenario the partial decay widths of d* -> d pi(0)pi(0) and d-> d pi (+)pi(-) are further explicitly evaluated and the total width is then obtained by use of the branching ratios extracted from the measured cross sections of other possible decay channels. Both the mass and the decay width of d calculated in this work are compatible with the data (M approximate to 2380 MeV, Gamma approximate to 70 MeV) reported by WASA-at-COSY Collaboration.
关键词	hexaquark state d*(2380) quark model hidden-color channel
DOI	10.1007/s11433-015-5767-3
收录类别	SCI ; ADS
语种	英语
WOS记录号	WOS:000368074700003
ADS Bibcode	2016SCPMA..59b5767H
ADS URL	https://ui.adsabs.harvard.edu/abs/2016SCPMA..59b5767H
ADS引文	https://ui.adsabs.harvard.edu/abs/2016SCPMA..59b5767H/citations
INSPIRE ID	1371851
引用统计	正在获取... 被引频次：27 [INSPIRE] 被引频次：25 [ADS]
文献类型	期刊论文
条目标识符	https://ir.ihep.ac.cn/handle/311005/247988
专题	院士
推荐引用方式 GB/T 7714	Huang, F,Shen PN,Dong YB,et al. Understanding the structure of d*(2380) in chiral quark model[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2016,59(2):622002.
APA	Huang, F.,沈彭年.,董宇兵.,张宗烨.,Shen, PN.,...&Zhang, ZY.(2016).Understanding the structure of d*(2380) in chiral quark model.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,59(2),622002.
MLA	Huang, F,et al."Understanding the structure of d*(2380) in chiral quark model".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 59.2(2016):622002.