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Xiao, C. W.; Wu, J. J.; Zou, B. S.
Molecular nature of P-cs (4459) and its heavy quark spin partners
Source PublicationPHYSICAL REVIEW D
Language英语
KeywordHIDDEN-CHARM PENTAQUARK DECAYS STATES MESON
AbstractInspired by the observation of the P-cs(4459) state by LHCb recently, we reexamine the results of the interaction of the J/y/A channel with its coupled channels, exploiting the coupled channel unitary approach combined with heavy quark spin and local hidden gauge symmetries. By tuning the only free parameter, we find a pole of (4459.07 + i6.89) MeV below the (D) over bar*Xi(c) threshold, which was consistent with the mass and width of the P-cs(4459) state. Thus, we assume the P-cs(4459) state to be a (D) over bar*Xi(c) bound state with the possible degeneracy of J(P) =1/2- and J(P) =3/2- According to this degeneracy, it would have a two-pole structure, like P-cs (4450) before. There is another pole in the J(P) = 1/2- sector, (4310.53 + i8.23) MeV, corresponding to a deep bound state of (D) over bar*Xi(c) . Furthermore, the previously predicted loosely bound states (D) over bar Xi'(c) (D) over bar*Xi'(c), (D) over bar*Xi(c)* with J = 1/2, I = 0 and (D) over bar Xi'(c,) (D) over bar*Xi(c), (D) over bar*Xi(c)* with J = 3/2, I = 0 may exist as either bound states or unbound virtual states. We hope that future experiments can search for the (D) over bar(*)Xi(c) molecular states not only in their dominant decay channels (D) over bar (s)(*)Lambda(c), but also in the channels J/psi/Lambda and eta(c)Lambda in order to reveal their different natures.
2021
ISSN2470-0010
Volume103Issue:5Pages:54016
Cooperation Status国内
Subject AreaAstronomy & Astrophysics ; Physics
MOST Discipline CatalogueAstronomy & Astrophysics ; Physics, Particles & Fields
DOI10.1103/PhysRevD.103.054016
Indexed BySCIE
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/27400
CollectionSCI期刊论文
Affiliation1.[Xiao, C. W.
2.Zou, B. S.] Cent South Univ, Sch Phys & Elect, Changsha 410083, Peoples R China
3.[Wu, J. J.
4.Zou, B. S.] Univ Chinese Acad Sci UCAS, Sch Phys Sci, Beijing 100049, Peoples R China
5.[Zou, B. S.] Chinese Acad Sci, Inst Theoret Phys, Key Lab Theoret Phys, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Xiao, C. W.,Wu, J. J.,Zou, B. S.. Molecular nature of P-cs (4459) and its heavy quark spin partners[J]. PHYSICAL REVIEW D,2021,103(5):54016.
APA Xiao, C. W.,Wu, J. J.,&Zou, B. S..(2021).Molecular nature of P-cs (4459) and its heavy quark spin partners.PHYSICAL REVIEW D,103(5),54016.
MLA Xiao, C. W.,et al."Molecular nature of P-cs (4459) and its heavy quark spin partners".PHYSICAL REVIEW D 103.5(2021):54016.
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