Finite size vertex correction to the strong decay of eta(c) and chi(c) states and a determination of alpha(s)(m(c))

	Finite size vertex correction to the strong decay of eta(c) and chi(c) states and a determination of alpha(s)(m(c))
	Ping RG(平荣刚); Jiang HQ(姜焕清); Zou BS(邹冰松); Ping, RG; Jiang, HQ; Zou, BS
刊名	CHINESE PHYSICS LETTERS
	2002
卷号	19 期号:2 页码:#REF!
通讯作者	Ping, RG (reprint author), CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.
英文摘要	We calculate the correction to the two-gluon decay width due to the finite extension of the vertex function. We obtain the corrected factor to the zero-range vertex gamma = 1.32, gamma = 1.45, gamma = 1.26 for eta(c),chi(c0), and chi(c2), respectively. With the decay width Gamma(eta(c) --> 2g) we extract the value alpha(s)(m(c)) = 0.28 +/- 0.05 which agrees with that calculated from the same correction to the process Gamma(J/Psi --> 3g). This correction to the process Gamma(eta(c) --> 2g) is not as large as that to the process Gamma(J/Psi --> 3g).
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
WOS记录号	WOS:000173834400016
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/226846]
专题	高能物理研究所_理论物理室高能物理研究所_实验物理中心
推荐引用方式 GB/T 7714	Ping RG,Jiang HQ,Zou BS,et al. Finite size vertex correction to the strong decay of eta(c) and chi(c) states and a determination of alpha(s)(m(c))[J]. CHINESE PHYSICS LETTERS,2002,19(2):#REF!.
APA	平荣刚,姜焕清,邹冰松,Ping, RG,Jiang, HQ,&Zou, BS.(2002).Finite size vertex correction to the strong decay of eta(c) and chi(c) states and a determination of alpha(s)(m(c)).CHINESE PHYSICS LETTERS,19(2),#REF!.
MLA	平荣刚,et al."Finite size vertex correction to the strong decay of eta(c) and chi(c) states and a determination of alpha(s)(m(c))".CHINESE PHYSICS LETTERS 19.2(2002):#REF!.