Exclusive decay of the upsilon into h(c), the X(3940) and X(4160)

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	Exclusive decay of the upsilon into h(c), the X(3940) and X(4160)
	Zhu, RL
刊名	PHYSICAL REVIEW D
	2015
卷号	92 期号:7 页码:74017
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.
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.
学科主题	Astronomy & Astrophysics ; Physics
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
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/20830]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Zhu, RL. Exclusive decay of the upsilon into h(c), the X(3940) and X(4160)[J]. PHYSICAL REVIEW D,2015,92(7):74017.
APA	Zhu, RL.(2015).Exclusive decay of the upsilon into h(c), the X(3940) and X(4160).PHYSICAL REVIEW D,92(7),74017.
MLA	Zhu, RL."Exclusive decay of the upsilon into h(c), the X(3940) and X(4160)".PHYSICAL REVIEW D 92.7(2015):74017.