Decays of P-c into J/psi N and eta N-c with heavy quark spin symmetry

doi:10.1103/PhysRevD.100.074007

CORC > 理论物理研究所 > 中国科学院理论物理研究所 > 理论物理所科研产出 > 理论物理所1978-2010年知识产出

	Decays of P-c into J/psi N and eta N-c with heavy quark spin symmetry
	Sakai, Shuntaro ; Jing, Hao-Jie ; Guo, Feng-Kun
刊名	PHYSICAL REVIEW D
	2019
卷号	100 期号:7 页码:74007
关键词	HIDDEN-CHARM PENTAQUARK CHIRAL DYNAMICS MESONS STATES
ISSN号	2470-0010
DOI	10.1103/PhysRevD.100.074007
英文摘要	We investigate the consequences of heavy quark spin symmetry (HQSS) on hidden-charm pentaquark P-c states. As has been proposed before, assuming the P-c(4440) and the P-c(4457) as S-wave (D) over barSigma(c) molecules, seven hadronic molecular states composed of (D) over bar Sigma(c), (D) over bar Sigma()(c), (D) over barSigma(c), and (D) over barSigma()(c) can be obtained, with the (D) over bar Sigma(c) molecule corresponding to the P-c(4312). These seven states can decay into J/psi N and eta N-c, and we use HQSS to predict ratios of partial widths of the S-wave decays. For the decays into J/psi N, it is found that among all six P-c molecules with spin 1/2 or 3/2, at least four states decay much more easily into the J/psi N than the P-c(4312), and two of them couple dominantly to the (D) over barSigma(c). While no significant peak around the (D) over barSigma()(c) threshold is found in the J/psi p distribution, these higher P-c states either are produced with lower rates or some special production mechanism for the observed P-c states might play an important role, such as an intricate interplay between the production of pentaquarks and triangle singularities.
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27202]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.[Sakai, Shuntaro 2.Jing, Hao-Jie 3.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Zhong Guan Cun East St 55, Beijing 100190, Peoples R China 4.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 5.[Jing, Hao-Jie
推荐引用方式 GB/T 7714	Sakai, Shuntaro,Jing, Hao-Jie,Guo, Feng-Kun. Decays of P-c into J/psi N and eta N-c with heavy quark spin symmetry[J]. PHYSICAL REVIEW D,2019,100(7):74007.
APA	Sakai, Shuntaro,Jing, Hao-Jie,&Guo, Feng-Kun.(2019).Decays of P-c into J/psi N and eta N-c with heavy quark spin symmetry.PHYSICAL REVIEW D,100(7),74007.
MLA	Sakai, Shuntaro,et al."Decays of P-c into J/psi N and eta N-c with heavy quark spin symmetry".PHYSICAL REVIEW D 100.7(2019):74007.