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题名: Two-photon decays of from lattice QCD
作者: Chen, T ;  Chen, Y ;  Gong, M ;  Lei, YH ;  Li, N ;  Liu, C ;  Liu, YB ;  Liu, ZF ;  Ma, JP ;  Qiu, WF ;  Wang, ZL ;  Zhang, JB
刊名: EUROPEAN PHYSICAL JOURNAL C
出版日期: 2016
卷号: 76, 期号:7, 页码:358
学科分类: Physics
DOI: http://dx.doi.org/10.1140/epjc/s10052-016-4212-8
通讯作者: Liu, C (reprint author), Peking Univ, Sch Phys, Beijing 100871, Peoples R China. ;  Liu, C (reprint author), Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China. ;  Liu, C (reprint author), Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China.
文章类型: Article
英文摘要: We present an exploratory lattice study for the two-photon decay of using twisted mass lattice QCD gauge configurations generated by the European Twisted Mass Collaboration. Two different lattice spacings of fm and fm are used in the study, both of which are of physical size of 2 fm. The decay widths are found to be 1.025(5) KeV for the coarser lattice and 1.062(5) KeV for the finer lattice, respectively, where the errors are purely statistical. A naive extrapolation toward the continuum limit yields KeV, which is smaller than the previous quenched result and most of the current experimental results. Possible reasons are discussed.
类目[WOS]: Physics, Particles & Fields
关键词[WOS]: TRANSITION FORM-FACTOR ;  TWISTED MASS FERMIONS ;  GAMMA-GAMMA-ASTERISK ;  RADIATIVE TRANSITIONS ;  LIGHT QUARKS ;  BELLE
收录类别: SCI
项目资助者: National Science Foundation of China (NSFC) [11505132, 11335001, 11275169, 11405178, 11575197] ;  DFG ;  NSFC [11261130311] ;  National Basic Research Program of China (973 Program) [2015CB856700] ;  CAS [2013013, 2011013] ;  Scientific Research Program - Shaanxi Provincial Education Department [15JK1348] ;  Natural Science Basic Research Plan in Shaanxi Province of China [2016JQ1009]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21608
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Recommended Citation:
Chen, T,Chen, Y,Gong, M,et al. Two-photon decays of from lattice QCD[J]. EUROPEAN PHYSICAL JOURNAL C,2016,76(7):358.
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