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Xue, SR; Jing, HJ; Guo, FK; Zhao, Q1,3,4
Disentangling the role of the Y(4260) in e(+)e(-) degrees -> D*D* and D-s*D-s* via line shape studies
发表期刊PHYSICS LETTERS B
语种英语
关键词TRIANGLE SINGULARITIES PENTAQUARK STATES
摘要Whether 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.
2018
ISSN0370-2693
卷号779页码:402-408
学科领域Astronomy & Astrophysics ; Physics
学科门类Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields
DOI10.1016/j.physletb.2018.02.027
收录类别SCIE
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/22927
专题理论物理所科研产出_SCI论文
作者单位1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
4.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
5.Hunan Normal Univ, Synerget Innovat Ctr Quantum Effects & Applicat S, Changsha 410081, Hunan, Peoples R China
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Xue, SR,Jing, HJ,Guo, FK,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 Xue, SR,Jing, HJ,Guo, FK,&Zhao, Q.(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 Xue, SR,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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