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Disentangling the role of the Y(4260) in e(+)e(-) degrees -> D*D* and D-s*D-s* via line shape studies
Xue SR(薛思润); Xue, SR; Jing, HJ; Guo, FK; Zhao, Q; Zhao Q(赵强)
2018
Source PublicationPHYSICS LETTERS B
ISSN0370-2693
EISSN1873-2445
Volume779Pages:402-408
SubtypeArticle
AbstractWhether the Y(4260) can couple to open charm channels has been a crucial issue for understanding its nature. The available experimental data suggest that the cross section line shapes of exclusive processes in e(+)e(-) annihilations have nontrivial structures around the mass region of the Y(4260). As part of a series of studies of the Y(4260) as mainly a (D) over barD(1) (2420) + c.c. molecular state, we show that the partial widths of the Y(4260) to the two -body open charm channels of e(+)e(-) -> D* (D) over bar* and D-s*(D) over bar (s)* are much smaller than that to (D) over barD*pi+C.C.. The line shapes measured by the Belle Collaboration for these two channels can be well described by the vector charmonium states psi(4040), psi(4160) and psi(4415) together with the Y(4260). It turns out that the interference of the Y(4260) with the other charmonia produces a dip around 4.22 GeV in the e(+)e(-) -> D* (D) over bar* cross section line shape. The data also show an evidence for the strong coupling of the Y(4260) to the D (D) over bar (1)(2420), in line with the expectation in the hadronic molecular scenario for the Y(4260). (C) 2018 The Authors. Published by Elsevier B.V.
DOI10.1016/j.physletb.2018.02.027
WOS KeywordTRIANGLE SINGULARITIES ; PENTAQUARK ; STATES
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields
WOS IDWOS:000429098900049
ADS Bibcode2018PhLB..779..402X
AXRIV CODE1708
inspireid1618357
Citation statistics
Cited Times:13 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/285839
Collection理论物理室
Corresponding AuthorZhao Q(赵强)
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Corresponding Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Xue SR,Xue, SR,Jing, HJ,et al. Disentangling the role of the Y(4260) in e(+)e(-) degrees -> D*D* and D-s*D-s* via line shape studies[J]. PHYSICS LETTERS B,2018,779:402-408.
APA 薛思润,Xue, SR,Jing, HJ,Guo, FK,Zhao, Q,&赵强.(2018).Disentangling the role of the Y(4260) in e(+)e(-) degrees -> D*D* and D-s*D-s* via line shape studies.PHYSICS LETTERS B,779,402-408.
MLA 薛思润,et al."Disentangling the role of the Y(4260) in e(+)e(-) degrees -> D*D* and D-s*D-s* via line shape studies".PHYSICS LETTERS B 779(2018):402-408.
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