Nucleon resonances N(1875) and N(2100) as strange partners of the LHCb pentaquarks

doi:10.1103/PhysRevD.95.074031

	Nucleon resonances N(1875) and N(2100) as strange partners of the LHCb pentaquarks
	He, Jun1,2,3,4
刊名	PHYSICAL REVIEW D
	2017-04-24
卷号	95 页码:9
ISSN号	2470-0010
DOI	10.1103/PhysRevD.95.074031
英文摘要	In this work, we investigate the possibility of interpreting two nucleon resonances, the N(1875) and the N(2100), as hadronic molecular states from the SigmaK and Sigma K interactions, respectively. With the help of effective Lagrangians in which coupling constants are determined by the SU( 3) symmetry, the SigmaK and Sigma K interactions are described by the vector-meson and pseudoscalar-meson exchanges. With the one-boson-exchange potential obtained, bound states from the SigmaK and Sigma K interactions are searched for in a quasipotential Bethe-Saltpeter equation approach. A bound state with quantum number I(J(P)) = 1/2(3/2(-)) is produced from the SigmaK interaction, which can be identified as the N(1875) listed in PDG. It can be seen as a strange partner of the LHCb pentaquark P-c(4380) with the same quantum numbers in the molecular state picture. The Sigma K interaction also produces a bound state with quantum number I(J(P)) 1/2(3/2(-)), which is related to experimentally observed N(2100) in the phi photo-production. Our results suggest that the N(2120) observed in the K Lambda(1520) photoproduction and the N(2100) observed in the. photoproduction have different origins. The former is a conventional threequark state while the latter is a Sigma K* molecular state, which can be seen as a strange partner of the P-c(4450) with different spin parity.
资助项目	National Natural Science Foundation of China[11675228] ; Major State Basic Research Development Program in China[2014CB845405]
WOS关键词	PHOTOPRODUCTION NEAR-THRESHOLD ; CHIRAL DYNAMICS ; BARYON ; MESON ; MODEL ; CANDIDATES ; SCATTERING ; LAMBDA ; PROTON ; STATES
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000400142000002
资助机构	National Natural Science Foundation of China ; Major State Basic Research Development Program in China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/45171]
专题	中国科学院近代物理研究所
通讯作者	He, Jun
作者单位	1.Inst Modern Phys CAS, Lanzhou 730000, Peoples R China 2.Nanjing Normal Univ, Dept Phys, Nanjing 210097, Jiangsu, Peoples R China 3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 4.Lanzhou Univ, Res Ctr Hadron & CSR Phys, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	He, Jun. Nucleon resonances N(1875) and N(2100) as strange partners of the LHCb pentaquarks[J]. PHYSICAL REVIEW D,2017,95:9.
APA	He, Jun.(2017).Nucleon resonances N(1875) and N(2100) as strange partners of the LHCb pentaquarks.PHYSICAL REVIEW D,95,9.
MLA	He, Jun."Nucleon resonances N(1875) and N(2100) as strange partners of the LHCb pentaquarks".PHYSICAL REVIEW D 95(2017):9.