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Are the Y states around 4.6 GeV from e(+)e(-) annihilation higher charmonia?
Wang, Jun-Zhang1,2,3; Qian, Ri-Qing1,2,3; Liu, X(刘翔)1,2,3; Matsuki, Takayuki4,5
2020-02-05
Source PublicationPHYSICAL REVIEW D   Impact Factor & Quartile Of Published Year  The Latest Impact Factor & Quartile
ISSN2470-0010
EISSN2470-0029
Volume101Issue:3
page numbers13
AbstractIn this work, we present the mass spectrum of higher charmonia around and above 4.6 GeV by adopting the unquenched potential model. We perform a combined fit to the updated experimental data of e(+)e(-) -> psi(2S)pi(+)pi(-) and e(+)e(-) Lambda(c)(Lambda) over bar (c). To understand the "platform" structure observed in the range of 4.57-4.60 GeV existing in the Lambda(c)(Lambda) over bar (c) invariant mass spectrum of e(+)e(-) -> Lambda(c)(Lambda) over bar (c) of BESIII, we introduce two resonances in this combined fit to e(+)e(-) -> Psi(2S)pi(+)pi(-) and e(+)e(-) -> Lambda(c)(Lambda) over bar (c), which have resonance parameters, m(Y1) = 4585 +/- 2 MeV, Gamma(Y1) = 29.8 +/- 8.0 MeV, m(Y2) = 4676 +/- 7 MeV, and Gamma(Y2) = 85.7 +/- 15.0 MeV. Furthermore, combining with our theoretical results, we indicate that the two charmoniumlike Y states can be due to two higher charmonia, which are mixtures of 6S and 5D c (c) over bar states. Their two-body open-charm decay behaviors are given. Under the same framework, our analysis of the data of e(+)e(-) -> Ds+Ds1 (2536)(-) recently released by Belle supports the introduction of these two higher charmonia around 4.6 GeV. Additionally, we predict the masses and two-body open-charm decays of six higher charmonia psi(nS) and psi(mD) with n = 7, 8, 9 and m = 6, 7, 8 above 4.6 GeV. The search for these higher charmonia will be an interesting issue for the running BESIII and BelleII, and even the possible Super Tau-Charm Factory discussed in China.
PublisherAMER PHYSICAL SOC
DOI10.1103/PhysRevD.101.034001
Indexed BySCIE
Language英语
Funding ProjectChina National Funds for Distinguished Young Scientists[11825503]
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000511198700003
PublisherAMER PHYSICAL SOC
Original Document TypeArticle
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/418648
Collection兰州大学
物理科学与技术学院
Corresponding AuthorLiu, Xiang
Affiliation
1.Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China
2.Lanzhou Univ, Res Ctr Hadron & CSR Phys, Lanzhou 730000, Peoples R China
3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
4.Tokyo Kasei Univ, 1-18-1 Kaga, Tokyo 1738602, Japan
5.RIKEN, Theoret Res Div, Nishina Ctr, Wako, Saitama 3510198, Japan
First Author AffilicationSchool of Physical Science and Technology
Corresponding Author AffilicationSchool of Physical Science and Technology
First Signature AffilicationSchool of Physical Science and Technology
Recommended Citation
GB/T 7714
Wang, Jun-Zhang,Qian, Ri-Qing,Liu, Xiang,et al. Are the Y states around 4.6 GeV from e(+)e(-) annihilation higher charmonia?[J]. PHYSICAL REVIEW D,2020,101(3).
APA Wang, Jun-Zhang,Qian, Ri-Qing,Liu, Xiang,&Matsuki, Takayuki.(2020).Are the Y states around 4.6 GeV from e(+)e(-) annihilation higher charmonia?.PHYSICAL REVIEW D,101(3).
MLA Wang, Jun-Zhang,et al."Are the Y states around 4.6 GeV from e(+)e(-) annihilation higher charmonia?".PHYSICAL REVIEW D 101.3(2020).
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