ITP OpenIR  > 理论物理所1978-2010年知识产出
Corrections for two photon decays of chi(c0) and chi(c2) and color octet contributions
Ma, JP; Wang, Q; Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
2002
发表期刊PHYSICS LETTERS B
ISSN0370-2693
卷号537期号:40972页码:233-240
摘要Using the fact that the c-quark inside a charmonium moves with a small velocity v in the charmonium rest-frame, one can employ an expansion in v to study decays of charmonia and results at the leading order for chi(c0,2) --> gammagamma exist in the literature. We study corrections at the next-to-leading order in the framework of nonrelativistic QCD(NRQCD) factorization. The study presented here is different than previous approaches where chi(c0,2) is taken as a bound-state of a c (c) over bar pair and a nonrelativistic wave-function is used for the pair. We find that the corrections are consist not only of relativistic corrections, but also of corrections from Fock state components of chi(c0,2) in which the c (c) over bar pair is in a color-octet state. For chi(c,2) there is also a contribution from a Fock state component in which the pair is in a F-wave state. We determine the factorization formula for decay widths in the form of NRQCD matrix elements representing nonperturbative effects related to chic(0,2), and calculate the perturbative coefficients at tree-level. Because the NRQCD matrix elements are unknown, a detailed prediction for the decay chi(c0,2) --> gammagamma cannot be made, but the effect of these corrections can be determined at certain level. Estimations show that the effect is significant and cannot be neglected. (C) 2002 Elsevier Science B.V. All rights reserved.
部门归属Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Wave Quarkonium Decays Qcd Corrections Mesons Annihilation Positronium Collisions Lep
学科领域Physics
URL查看原文
收录类别SCI
WOS记录号WOS:000176556900008
引用统计
被引频次:23[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/311006/13498
专题理论物理所1978-2010年知识产出
通讯作者Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
推荐引用方式
GB/T 7714
Ma, JP,Wang, Q,Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.. Corrections for two photon decays of chi(c0) and chi(c2) and color octet contributions[J]. PHYSICS LETTERS B,2002,537(40972):233-240.
APA Ma, JP,Wang, Q,&Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(2002).Corrections for two photon decays of chi(c0) and chi(c2) and color octet contributions.PHYSICS LETTERS B,537(40972),233-240.
MLA Ma, JP,et al."Corrections for two photon decays of chi(c0) and chi(c2) and color octet contributions".PHYSICS LETTERS B 537.40972(2002):233-240.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Corrections for two (98KB) 开放获取使用许可请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Ma, JP]的文章
[Wang, Q]的文章
[Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.]的文章
百度学术
百度学术中相似的文章
[Ma, JP]的文章
[Wang, Q]的文章
[Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.]的文章
必应学术
必应学术中相似的文章
[Ma, JP]的文章
[Wang, Q]的文章
[Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。