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

YANG Xiu-Yi; FENG Tai-Fu

doi:10.1088/1674-1137/34/12/004

Chinese Physics C> 2010, Vol. 34> Issue(12) : 1797-1811 DOI: 10.1088/1674-1137/34/12/004

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

YANG Xiu-Yi ^, ,
FENG Tai-Fu

Abstract
HTML
Reference
Related

PDF

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→X_sγ can reach 5% as the energy scale of new physics Λ_NP=200 GeV.

References

[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

[1]	Wen Chen;Feng Feng;Yu Jia;Wen-Long Sang . Mixed electroweak-QCD corrections to ${e^+e^-\to \mu^+\mu^- H}$ at CEPC with finite-width effect. Chinese Physics C, 2019, df87c41e-622f-49a7-b081-5c584df157aa(11): 13108-.
[2]	Qing-Hong Cao , Fa-Peng Huang , Ke-Pan Xie , Xinmin Zhang . Testing the electroweak phase transition in scalar extension models at lepton colliders. Chinese Physics C, 2018, 42(2): 023103. doi: 10.1088/1674-1137/42/2/023103
[3]	Rebecca Krall , Matthew Reece . Last electroweak WIMP standing: pseudo-Dirac higgsino status and compact stars as future probes. Chinese Physics C, 2018, 42(4): 043105. doi: 10.1088/1674-1137/42/4/043105
[4]	Pazilet Obul , Sayipjamal Dulat , Tie-Jiun Hou , Ablikim Tursun , Nijat Yalkun . Next-to-leading order QCD and electroweak corrections to Higgs-strahlung processes at the LHC. Chinese Physics C, 2018, 42(9): 093105. doi: 10.1088/1674-1137/42/9/093105
[5]	Ciprian A. Sporea . Scattering of massless fermions by Schwarzschild and Reissner-Nordström black holes. Chinese Physics C, 2017, 41(12): 123101. doi: 10.1088/1674-1137/41/12/123101
[6]	Ming-Zhu Liu , Duo-Jie Jia , Dian-Yong Chen . Possible hadronic molecular states composed of S-wave heavy-light mesons. Chinese Physics C, 2017, 41(5): 053105. doi: 10.1088/1674-1137/41/5/053105
[7]	Fang-Yong Dong , Bao-Xi Sun , Jing-Long Pang . The Λ(1405) state in a chiral unitary approach with off-shell corrections to dimensional regularized loop functions. Chinese Physics C, 2017, 41(7): 074108. doi: 10.1088/1674-1137/41/7/074108
[8]	Jue Zhang , Shun Zhou . Electroweak vacuum stability and diphoton excess at 750 GeV. Chinese Physics C, 2016, 40(8): 081001. doi: 10.1088/1674-1137/40/8/081001
[9]	CHENG Shan , FAN Ying-Ying , XIAO Zhen-Jun . B→Kη^(') decays in the SM with fourth generation fermions. Chinese Physics C, 2014, 38(7): 073102. doi: 10.1088/1674-1137/38/7/073102
[10]	ZHAO Shu-Min , FENG Tai-Fu , WANG Fang , GAO Tie-Jun , ZHANG Yin-Jie . One-loop on-shell renormalization of MSSM vertexes. Chinese Physics C, 2013, 37(5): 053101. doi: 10.1088/1674-1137/37/5/053101
[11]	ZHANG Ying , WANG Qing . Parameterization of general Z-γ-Z’ mixing in an electroweak chiral theory. Chinese Physics C, 2012, 36(4): 298-306. doi: 10.1088/1674-1137/36/4/001
[12]	SUN Yi , ZHANG Hao-Ran . One loop integrals reduction. Chinese Physics C, 2012, 36(11): 1055-1064. doi: 10.1088/1674-1137/36/11/004
[13]	LIU Li-Quan , ZHAO Shu-Min , ZHANG Jian-Jun , YANG Bao-Zhu , HUANG De-Bao . One-loop QCD contribution to the potential of QQ. Chinese Physics C, 2011, 35(2): 126-129. doi: 10.1088/1674-1137/35/2/003
[14]	Mahnaz Q , Samina S . Two loop low temperature corrections to electron self energy. Chinese Physics C, 2011, 35(7): 608-611. doi: 10.1088/1674-1137/35/7/002
[15]	ZHANG Yuan-Jiang , LI Gang , ZHAO Qiang . Manifestation of intermediate meson loop effects in charmonium decays. Chinese Physics C, 2010, 34(9): 1181-1184. doi: 10.1088/1674-1137/34/9/006
[16]	SU Nan , Jens O , Michael Strickland . Hard-thermal-loop QED thermodynamics. Chinese Physics C, 2010, 34(9): 1527-1529. doi: 10.1088/1674-1137/34/9/091
[17]	YUE Chong-Xing , LU Gong-Ru , LI Wei-Bin , SUN Jun-Feng . PGB′s Corrections to Top-Quark Production in Topcolor-assisted Multiscale Technicolor Model. Chinese Physics C, 2001, 25(4): 289-295.
[18]	WANG Hui , SA BenHao , TAI An . Low PT Enhancement of Photon Production in 200 A GeV S+ An Collisions. Chinese Physics C, 2000, 24(3): 220-224.
[19]	Chen Fengzhi , Guo Liang . Unified Model Accommodating Three Generations of Fermions. Chinese Physics C, 1995, 19(S3): 305-311.
[20]	Hou Defu , Li Jiarong . Self-Consistent Investigation of Electroweak Transition at High Temperature. Chinese Physics C, 1994, 18(S4): 367-374.

Access

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

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2010-03-01
Revised: 2010-03-15

Article Metric

Article Views(2729)
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

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

Corresponding author: YANG Xiu-Yi,

Received Date: 2010-03-01

Accepted Date: 2010-03-15

Available Online: 2010-12-05

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→X_sγ can reach 5% as the energy scale of new physics Λ_NP=200 GeV.

HTML

Reference (1)

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

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article