Isospin violating decays of vector charmonia

doi:10.1140/epjc/s10052-023-12099-1

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	Isospin violating decays of vector charmonia
	Geng, Chao-Qiang ; Liu, Chia-Wei ; Zhang, Jiabao 3
刊名	EUROPEAN PHYSICAL JOURNAL C
	2023
卷号	83 期号:10 页码:973
关键词	BARYON J/PSI
ISSN号	1434-6044
DOI	10.1140/epjc/s10052-023-12099-1
英文摘要	We study the isospin violating decays of vector charmonia to Lambda(Sigma) over bar (0) and its charge conjugate. They are dominated by the single photon annihilation and can be evaluated reliably with timelike form factors. We utilize the quark-pair creationmodel, which is valid for the OZI suppressed decays, to evaluate the form factors. We obtain the branching fractions of B(J/psi -> Lambda(Sigma) over bar (0) + c.c.) = (2.4 +/- 0.4) x 10(-5) and B(psi(2 S) -> Lambda(Sigma) over bar (0) + c.c.) = (3.0 +/- 0.5) x10(-6), which are compatible with the measurements by the BESIII collaborations, respectively. The decay asymmetries are found to be alpha(J/psi) = 0.314 and alpha(psi(2S)) = 0.461, which can be examined at BESIII in the foreseeable future.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/28008]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.UCAS, Sch Fundamental Phys & Math Sci, Hangzhou Inst Adv Study, Hangzhou 310024, Peoples R China 2.Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, Shanghai 200240, Peoples R China 3.Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai 200240, Peoples R China 4.Univ Chinese Acad Sci UCAS, Inst Theoret Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Geng, Chao-Qiang,Liu, Chia-Wei,Zhang, Jiabao. Isospin violating decays of vector charmonia[J]. EUROPEAN PHYSICAL JOURNAL C,2023,83(10):973.
APA	Geng, Chao-Qiang,Liu, Chia-Wei,&Zhang, Jiabao.(2023).Isospin violating decays of vector charmonia.EUROPEAN PHYSICAL JOURNAL C,83(10),973.
MLA	Geng, Chao-Qiang,et al."Isospin violating decays of vector charmonia".EUROPEAN PHYSICAL JOURNAL C 83.10(2023):973.