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题名: Charmed-Hadron Productionin gamma(1S) Semi-inclusive Decay
作者: Chen, HT ;  Sang, WL ;  Wu, P
刊名: COMMUNICATIONS IN THEORETICAL PHYSICS
出版日期: 2012
卷号: 57, 期号:4, 页码:665-676
关键词: QUARKONIUM DECAY ;  MATRIX-ELEMENTS ;  S-WAVE ;  ANNIHILATION ;  QCD
学科分类: Physics
通讯作者: Chen, HT (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Chen Hai-Ting; Wu Pei] Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China; [Sang Wen-Long] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
英文摘要: In the framework of the NRQCD factorization formalism, we calculate the decay rate for the process gamma(1S) -> c (c) over bar gg to the next-to-leading order (NLO) in the relative velocity v of the b quark in the bottomonium rest frame. We also study the momentum distributions of the charm quark and the charmed-hadron in the decay. The momentum distribution of the charmed-hadron is obtained by convolving the charm quark momentum distribution with a fragmentation function of the charm quark into the hadron. In addition, we fit the nonperturbative NRQCD matrix elementh < v(2)>gamma through comparing the theoretical prediction with the measurement from the BaBar collaboration for the decay rate of gamma(1S) -> D*(+) X. In return, taking this matrix element as an input parameter, we predict the decay rates as well as the momentum distributions for a collection of charmed-hadrons in the process gamma(1S) -> c (c) over bar gg -> hX.
资助者: National Natural Science Foundation of China [10875130, 10935012, 10875156]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000303049000022
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15128
Appears in Collections:理论物理所2012年知识产出_期刊论文

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Recommended Citation:
Chen, HT,Sang, WL,Wu, P. Charmed-Hadron Productionin gamma(1S) Semi-inclusive Decay[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2012,57(4):665-676.
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