Impact factor of Chinese Physics C is 3.6 in 2022 2021 Impact Factor 2.944
Advanced Search
Chinese Physics C> 1997, Vol. 21> Issue(5) : 413-424 

A Study on Rare Radiative Decay Bc→Dsγ in Technicolor Models

  •  Physics Department of Henan Normal University, Xinsiang 4530022 Institute of Hight Energy Physics, The Chinese Academy of Sciences, Beijing 100080

  • We calulate the psedo-Goldstone-bosons (PGB) contributions to the decay Bc→Ds γ in one generation technicolor model (TCI) and the technicolor model with massless doublet (TCⅡ),and compare with the contributions estimated in the standard model. We find that the contributions of PGBs in the TCI to the electri-magnetic penguin dirgram are large, whereas those of the TCⅡ are small. However, the contributions to the weak annihilation diagrams can be neglected. It is expected that the difference of the branching ratio Br (Bc→Dsγ)in various models can be studied at LHC in near future, and will be an important test to different models.
  • 加载中

  • References

    [1] S.L.Glashow,Nucl.Phys.22（1961）579:S.Weinberg,Phys,Rev.Lett.,19（1967）1246.[2]S.Weinberg,Phys.Rev,D13（1976）974;19（1979）1277:L.Susskind,20（1979）2619;E.Echeten,K.Lane,Phys.Lett.,90B（1980）125;Aappelquist et al.,phys.Rev.Lett.,57（1986）957.[3]D.S.Du.Z.Wang.phys.Rev,D39（1989）42;K.Cheng,T.C.Yuan,phys,Lett.,B325（1994）481;phys.Rev.,D48（1994）5049;L.G.Lu,et al.,phy.Lett.,B341（1995）391;phys.Rev;D51（1995）221.[4]D.S.DuG.R.Lu,Y.D.Yang BIHEP-TH-38（Submitted to phys.Lett.B）[5]H.Lelltwyler,M.Roos,Z.phys.,C25（1984）91.[6]D.S.Du et al.,BIHEP-TH-32（to be pnbilished in phys.Lett.,B）.[7]A.Szczepaiak,et al.,phys.Lett.,B243（1990）287;C.E.Carlson,J.Mil Rna,phys.Lett.B301（1993）237;phys.Rev;D49（1994）5908.[8]E.Farhi,L.Susskind,Phys.Rev.,D20（1979）3404;S.Dimopouls,Nucl.phys.,B168（1989）69.[9]C.D.Carone,H.Georgi,Phys.Rev.,D49（1994）1427.[10]S.J.Brodsky,Gp.Lepage,Phys.Rev;D22（1980）2157.[11]S.J.Brodsky,C.R.Ji,phys.Rev.Lett.,55（1985）2257.[12]B.Grinstein et al.,Nucl, phys.,B339（1990）269.[13]H.Y.Cheng et al.,phys.Rev.,D51（1995）1199.[14]J.Preskill,Nucl.Phys.,B117（1981）21.[15]H.Y.Cheng,Int.J,Mod.phys.,A4（1989）495.[16]A.Aoki et al.,prog.Theor.Phys.,89（1993）137;D.Acosta et al.,CLNS 93/128;BES Collaboration,J.Z.Bai et al.,Phys.Rev.Lett.,74（1995）4599.[17]W. Buchmiiiller, S-H. HTye, Phys. Rev., D2A (1994) 132; A. Martin, Phys. Lett; B93 (1980) 338; c.Quigg, J. L.Rosner, Phys. Lett., B71(1977) 153;E.Eicheten et al.,Phys.Rev;D17（1978）3090.[18]Particle Data Group,L.Montanet et al.,phys.Rev.,D50（1994）1173.[19]W.Rwong,J L.Rosner,Phys.Rev.,D44（1991）212.[20]E.J.Eichten,C.Quigg FERMILAB-PUB-94/032-Thep-ph/942201.[21]CLEO Collaboration,M.S.Alam et al.,phys.Rev.,50（1994）43.[22]M.Neubert,Phys.Lett.,B338（1994）84.[23]CLEO Collaboration,M.SAlam.et al;.,Rev.Lett.,74（1995）2285.[24]C.D.Lu,Z.J.Xiao.HNU-TH/95-09（Submitred to phys.Rev.,D）[25]ALEPH Collaboration,D.Decamp et al.phys.Rev.,216（1992）253.[26]SL AC,R.H.Schindler,phys.Rev,D50（1994）1601.[27]M.E.Peskin,T.Takeuchi,Phys.Rev.,D46（1992）381.[28]C.Quigg,FERMILAB-conf-93/265-T;C.H.Cheng,Y.Q.Chen,phys.REv.,D49（1994）3399;P.Colangelo et al.,Z.phys.,C57（1993）43.[29]M.Bauer et al.,Z.Phys.,C29（1985）637;B.Grinstein et al,phys.Rev.D39（1987）799.[30]E.Golowich,S.Pakvasa,Phys.Rev.,D51（1995）1215;H.Y.Cheng,Phys.Rev.,D51（1995）6288.[31]K.Cheung.Phys.Rev.Lett.,71（1993）3413.

  • Access

    加载中

Get Citation
Lu Gongru, Xiong Zhaohua, Cao Yigang and Yang Yadong. A Study on Rare Radiative Decay Bc→Dsγ in Technicolor Models[J]. Chinese Physics C, 1997, 21(5): 413-424.
Lu Gongru, Xiong Zhaohua, Cao Yigang and Yang Yadong. A Study on Rare Radiative Decay Bc→Dsγ in Technicolor Models[J]. Chinese Physics C, 1997, 21(5): 413-424. shu
Milestone
Received: 1900-01-01
Revised: 1900-01-01
Article Metric

Article Views(2625)
PDF Downloads(529)
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:

A Study on Rare Radiative Decay Bc→Dsγ in Technicolor Models

    Corresponding author: Lu Gongru,
  • Physics Department of Henan Normal University, Xinsiang 4530022 Institute of Hight Energy Physics, The Chinese Academy of Sciences, Beijing 100080
  • Received Date: 1900-01-01
  • Accepted Date: 1900-01-01
  • Available Online: 1997-05-05

Abstract: We calulate the psedo-Goldstone-bosons (PGB) contributions to the decay Bc→Ds γ in one generation technicolor model (TCI) and the technicolor model with massless doublet (TCⅡ),and compare with the contributions estimated in the standard model. We find that the contributions of PGBs in the TCI to the electri-magnetic penguin dirgram are large, whereas those of the TCⅡ are small. However, the contributions to the weak annihilation diagrams can be neglected. It is expected that the difference of the branching ratio Br (Bc→Dsγ)in various models can be studied at LHC in near future, and will be an important test to different models.

    HTML

Reference (1)

目录

Link
IOPScience
SCOAP3
arXiv
Chinese Physical Society
Journal information
Introduction
Editorial Board
Others
Subscribe
Contact us
QQ: 1307685413
Tel: +86-010-88235947
Fax: +86-010-88233126
E-mail: cpc@ihep.ac.cn

  • CPC Website

  • IOP Website

  • CPC WeChat

Copyright © Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, China 京ICP备05002789号-1

Supported by: Beijing Renhe Information Technology Co. Ltd  E-mail: info@rhhz.net

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return