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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; Jiang, HQ; Zou, BS; Ping, RG , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.
2002
发表期刊CHINESE PHYSICS LETTERS
ISSN0256-307X
卷号19期号:2页码:194-196
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).
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
关键词Heavy
学科领域Physics
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收录类别SCI
WOS记录号WOS:000173834400016
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13604
专题理论物理所SCI论文
通讯作者Ping, RG , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.
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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):194-196.
APA Ping, RG,Jiang, HQ,Zou, BS,&Ping, RG , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China..(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),194-196.
MLA Ping, RG,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):194-196.
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