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题名: Exclusive decay of the upsilon into h(c), the X(3940) and X(4160)
作者: Zhu, RL
刊名: PHYSICAL REVIEW D
出版日期: 2015
卷号: 92, 期号:7, 页码:74017
学科分类: Astronomy & Astrophysics ;  Physics
DOI: http://dx.doi.org/10.1103/PhysRevD.92.074017
通讯作者: Zhu, RL (reprint author), Shanghai Jiao Tong Univ, INPAC, Shanghai Key Lab Particle Phys & Cosmol, Dept Phys & Astron, Shanghai 200240, Peoples R China.
文章类型: Article
英文摘要: In this paper, we study double charmonia production in upsilon peaks, especially a S-wave charmonium eta(c) and a P-wave charmonium h(c)(P-1(1)), or a S-wave charmonium J/psi and the X(3940) and X(4160) within the nonrelativistic QCD (NRQCD) approach, which is a powerful tool to realize the factorization of double charmonia production in electron-positron annihilation. The J(PC) = 1(--) state Upsilon(nS) can provide an ideal laboratory for studying the properties of double-heavy quarkonium and also can separate the perturbative and nonperturbative parts due to the large heavy quark mass compared with the typical hadron scale Lambda(QCD). Explanation of the X(3940) and X(4160) as the 3(1)S(0) and 4(1)S(0) states, respectively, are compatible with the observed upper limits for the branching fractions of Upsilon(1S, 2S) -> J/psi + X, where X = X(3940), X(4160) by the Belle Collaboration. The branching fractions of Upsilon(1S, 2S, 3S) -> eta(c) + h(c)(P-1(1)) are predicted to be around 10(-6), which shall be tested in Belle-II experiments.
类目[WOS]: Astronomy & Astrophysics ;  Physics, Particles & Fields
关键词[WOS]: DOUBLE-CHARM PRODUCTION ;  TO-LEADING-ORDER ;  LOOP CALCULATIONS ;  ROOT-S=10.6 GEV ;  QUARKONIUM ;  SPECTROSCOPY ;  ANNIHILATION ;  COLLIDERS ;  J/PSI ;  QCD
收录类别: SCI
项目资助者: key laboratory grant from the Office of Science and Technology, Shanghai Municipal Government [11DZ2260700] ;  Shanghai Natural Science Foundation [15ZR1423100] ;  State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF111CJ1]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20830
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
Zhu, RL. Exclusive decay of the upsilon into h(c), the X(3940) and X(4160)[J]. PHYSICAL REVIEW D,2015,92(7):74017.
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