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题名: Finite size vertex correction to the strong decay of eta(c) and chi(c) states and a determination of alpha(s)(m(c))
作者: Ping, RG ;  Jiang, HQ ;  Zou, BS
刊名: CHINESE PHYSICS LETTERS
出版日期: 2002
卷号: 19, 期号:2, 页码:194-196
关键词: HEAVY
学科分类: Physics
通讯作者: Ping, RG , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.
部门归属: CCAST, World Lab, Beijing 100080, Peoples R China; Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Chinese Natl Lab Heavy Ion Accelerator, Ctr Nucl Theory, Lanzhou 730000, 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).
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000173834400016
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13604
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Ping, RG,Jiang, HQ,Zou, BS. 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):194-196.
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