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Technicolor corrections on B-s,B-d ->gamma gamma decays in QCD factorization
Xiao, ZJ; Lv CD(吕才典); Lu, CD; Huo, WJ
2003
发表期刊PHYSICAL REVIEW D
卷号67期号:9页码:94021
通讯作者Nanjing Normal Univ, Dept Phys, Jiangsu 210097, Peoples R China ; CCAST, World Lab, Beijing 100080, Peoples R China ; CAS, Inst High Energy Phys, Beijing 100039, Peoples R China ; Beijing Univ, Dept Phys, Beijing 100871, Peoples R China
摘要Within the framework of the top-color-assisted technicolor (TC2) model, we calculate the new physics contributions to the branching ratios B(B-s,B-d-->gammagamma) and CP violating asymmetries r(CP)(-) (B-s,B-d-->gammagamma) in the QCD factorization based on the heavy-quark limit mbmuch greater thanLambda(QCD). Using the considered parameter space, we find that (a) for both B-s-->gammagamma and B-d-->gammagamma decays, the new physics contribution can provide a factor of two to six enhancement to their branching ratios, (b) for the B-s-->gammagamma decay, its direct CP violation is very small in both the SM and TC2 model, and (c) the CP violating asymmetry r(CP)(-) (B-d-->gammagamma) is around the ten percent level in both the SM and TC2 model, but the sign of CP asymmetry in the TC2 model is different from that in the SM.
文章类型Article
学科领域Astronomy & Astrophysics; Physics
研究领域[WOS]Astronomy & Astrophysics ; Physics
DOI10.1103/PhysRevD.67.094021
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语种英语
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000183313000037
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被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240877
专题理论物理室
作者单位中国科学院高能物理研究所
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Xiao, ZJ,Lv CD,Lu, CD,et al. Technicolor corrections on B-s,B-d ->gamma gamma decays in QCD factorization[J]. PHYSICAL REVIEW D,2003,67(9):94021.
APA Xiao, ZJ,吕才典,Lu, CD,&Huo, WJ.(2003).Technicolor corrections on B-s,B-d ->gamma gamma decays in QCD factorization.PHYSICAL REVIEW D,67(9),94021.
MLA Xiao, ZJ,et al."Technicolor corrections on B-s,B-d ->gamma gamma decays in QCD factorization".PHYSICAL REVIEW D 67.9(2003):94021.
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