×
近期发现有不法分子冒充我刊与作者联系,借此进行欺诈等不法行为,请广大作者加以鉴别,如遇诈骗行为,请第一时间与我刊编辑部联系确认(《中国物理C》(英文)编辑部电话:010-88235947,010-88236950),并作报警处理。
本刊再次郑重声明:
(1)本刊官方网址为cpc.ihep.ac.cn和https://iopscience.iop.org/journal/1674-1137
(2)本刊采编系统作者中心是投稿的唯一路径,该系统为ScholarOne远程稿件采编系统,仅在本刊投稿网网址(https://mc03.manuscriptcentral.com/cpc)设有登录入口。本刊不接受其他方式的投稿,如打印稿投稿、E-mail信箱投稿等,若以此种方式接收投稿均为假冒。
(3)所有投稿均需经过严格的同行评议、编辑加工后方可发表,本刊不存在所谓的“编辑部内部征稿”。如果有人以“编辑部内部人员”名义帮助作者发稿,并收取发表费用,均为假冒。
                  
《中国物理C》(英文)编辑部
2024年10月30日

Two loop electroweak corrections from heavy fermions to b→s+γ

  • Applying an effective Lagrangian method and an on-shell scheme, we analyze the electroweak corrections to the rare decay b→s+γ from some special two loop diagrams in which a closed heavy fermion loop is attached to the virtual charged gauge bosons or Higgs. At the decoupling limit where the virtual fermions in the inner loop are much heavier than the electroweak scale, we verify the final results satisfying the decoupling theorem explicitly when the interactions among Higgs and heavy fermions do not contain the nondecoupling couplings. Adopting the universal assumptions on the relevant couplings and mass spectrum of new physics, we find that the relative corrections from those two loop diagrams to the SM theoretical prediction on the branching ratio of B→Xsγ can reach 5% as the energy scale of new physics ΛNP=200 GeV.

  • 加载中
  • [1] Barberio E et al.arXiv:0808.1297 (hep-ex)[2] Misiak M et al.Phys.Rev.Lett.,2007,98:022002; Misiak M.arXiv:0808.3134 (hep-ph); Chetyrkin K,Misiak M,Munz M.Phys.Lett.B,1997,400:206; 425:414(E); Hurth T.hep-ph/0106050; Greub C,Hurth T,Wyler D.Phys.Rev.D,1996,54:3350; Adel K,Yao Y.Phys.Rev.D,1994,49:4945; Ali A,Greub C.Phys.Lett.B,1995,361:146[3] Strumia A.Nucl.Phys.B,1998,532:28[4] Borzumati F,Greub C,Yamada Y.Phys.Rev.D,2004,69:055005[5] FENG Tai-Fu.Phys.Rev.D,2004,70:096012[6] FENG Tai-Fu,LI Xue-Qian,Maalampi J,ZHANG Xin-Min.Phys.Rev.D,2005,71:056005[7] FENG Tai-Fu,LI Xue-Qian,LIN L,Maalampi J,SONG He-Shan.Phys.Rev.D,2006,73:116001[8] FENG Tai-Fu,SUN Lin,YANG Xiu-Yi.Phys.Rev.D,2008,77:116008; Nucl.Phys.B,2008,800:221[9] Bohm M,Spiesberger H,Hollik W,Fortsch.Phys.,1986,34:687; Denner A.Fortsch.Phys.,1993,41:307[10] Abbott L F.Nucl.Phys.B,1981,185:189; Gavela M B,Girardi G,Malleville C,Sorba P.Nucl.Phys.B,1981,193:257; Deshpande N G,Nazerimonfared M.Nucl.Phys.B,1983,213:390[11] Buchalla G,Buras A J,Lautenbacher M E.Rev.Mod.Phys.,1996,68:1125; Grigjanis R,O'Donnell P J,Sutherland M,Navelet H.Phys.Rept.,1993,228:93[12] Barr S M,Zee A.Phys.Rev.Lett.,1990,65:21[13] CHANG D,Keung W,Pilaftsis A.Phys.Rev.Lett.,1999,82:900; Pilaftsis A.Phys.Lett.B,1999,471:174; CHANG D,CHANG W,Keung W.Phys.Lett.B,2000,478:239; FENG T F,HUANG T,LI X Q,ZHANG X M,ZHAO S M.Phys.Rev.D,2003,68:016004[14] Chetyrkin K,Misiak M,Munz M.Phys.Lett.B,1997,400:206; 425:414(E); Hurth T.hep-ph/0106050; Greub C,Hurth T,Wyler D.Phys.Rev.D,1996,54:3350; Adel K,Yao Y.Phys.Rev.D,1994,49:4945; Ali A,Greub C.Phys.Lett.B,1995,361:146[15] Amsler C et al.Phys.Lett.B,2008,667:1[16] Georgi H,Grant A K,Hailz G.Phys.Rev.D,2001,63:064027; Appelquist T,CHENG H C,Dobrescu B.Phys.Rev.D,2001,64:035002[17] Randall L,Sundrum R.Phys.Rev.Lett.,1999,83:3370; Casagrande S,Goertz F,Haisch U,Neubert M,Pfoh T.JHEP,2008,094:0810[18] Ramsey-Mzsolf M J,SU S.Phys.Rept.,2008,456:1[19] Frampton P H.Phys.Rev.Lett.,1992,69:2889; Pisano F,Pleitez V.Phys.Rev.D,1992,46:410[20] Hubisz J,Meade P.Phys.Rev.D,2005,71:035016[21] Kagan A L,Neubert M.Phys.Rev.D,1998,58:094012
  • 加载中

Get Citation
YANG Xiu-Yi and FENG Tai-Fu. Two loop electroweak corrections from heavy fermions to b→s+γ[J]. Chinese Physics C, 2010, 34(12): 1797-1811. doi: 10.1088/1674-1137/34/12/004
YANG Xiu-Yi and FENG Tai-Fu. Two loop electroweak corrections from heavy fermions to b→s+γ[J]. Chinese Physics C, 2010, 34(12): 1797-1811.  doi: 10.1088/1674-1137/34/12/004 shu
Milestone
Received: 2010-03-01
Revised: 2010-03-15
Article Metric

Article Views(2717)
PDF Downloads(480)
Cited by(0)
Policy on re-use
To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Email This Article

Title:
Email:

Two loop electroweak corrections from heavy fermions to b→s+γ

    Corresponding author: YANG Xiu-Yi,

Abstract: 

Applying an effective Lagrangian method and an on-shell scheme, we analyze the electroweak corrections to the rare decay b→s+γ from some special two loop diagrams in which a closed heavy fermion loop is attached to the virtual charged gauge bosons or Higgs. At the decoupling limit where the virtual fermions in the inner loop are much heavier than the electroweak scale, we verify the final results satisfying the decoupling theorem explicitly when the interactions among Higgs and heavy fermions do not contain the nondecoupling couplings. Adopting the universal assumptions on the relevant couplings and mass spectrum of new physics, we find that the relative corrections from those two loop diagrams to the SM theoretical prediction on the branching ratio of B→Xsγ can reach 5% as the energy scale of new physics ΛNP=200 GeV.

    HTML

Reference (1)

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return