Rare Decays of the Top Quark in the Technicolor Model With a Massless Scalar Doublet

  • The rare decays t→cV(V=Z,γ,g)induced through loop diagrams are calculated in a minimal Technicolor model(MTC) with a massless weak doublet recently presented by C.D.Carone and H. Georgi.We find that these new contributions can enhance the SM branching fractions by as much as 3—4 orders of magnitude,i.e.,B(t→cZ)≈10,B(t→cγ)≈10-9, B(t→cg)≈10-6 for the favorable values of the parameters.It might provide a unique window to detect the virtual effects of technipions in MTC theory.
  • 加载中
  • [1] J.L.Diza-Cruz et al.,Phys.Rev.,D41(1990)891;B.Dutta Roy et al.,Phys.Rev.,Lett,65(1990)827;H.Fritzsch,Phys.Lett,B224(1989)423;W.Bochmuller,M.Gronau,Phys.Lett,B220(1989)641.[2]G.Eilam,J.L.Hewett,A.Soui,Phys Rev.,D44(1991)1473.[3]B.Grzadkowski,J.F Gunion,P.Krawczyk,Phys.Lett,B268(1991)106.[4]C.S.Li,R.J.Oakes,J.M.Yang,Phys.Rev.,D49(1994)293.[5]X.YWang,G.R.Lu;J.M.Yang et al.,Phys.Rev.,D50(1994)5781.[6]C.D.Carore,H.Deorgi,Phys.Rev.,D39(1994)1427.[7]C.D.Carone,E.H.Sinunons,Nucl Phys.,B397(1993)591.[8]E.H.Simmons,Nucl Phys.,B312(1989)253.,S.Samuel,ibid,B347(1990)625.[9]A.Kagan,S.Samuel,Phys.Lett,B252(1990)605;B270(1991)37.[10]Y.D.Yang,T.H.Lu et al.,submitted to Phys.Rev,D(inpress).[11]G.R.Lu,H.B.Li,Y.D.Yang,toappear in Phys.Rev,D(inpress).[12]C.D.Carone et al.,Phys.Lett.,B(1995)355.[13]A.Manohar,H.Georgi,Nucl Phys.,B234(1984)189;H.Geogi,L.Randall,Nucl Phys.,B276(1986)241;H.geogi,Phvs Lett,B298(1993)187.[14]CDFcollaboration,F.Abe et al.,FERMILAB-PUB-95/022-E.[15]D0collaboration,S.Abachi et al.,FERMILAB-PUB-95/028-E.[16]D.Decamp et al.,Phys.Rap.,216(1992)253.[17]M.Clements et al.,Phys.Rev.,D27(1983)570;A.Axelrod,Nucl Phys.,B209(1982)349;W.Hollik,DESY88-188;G.Passarino M.Veltman,Nucl Phys.,B160(1979)151.
  • 加载中

Get Citation
Lu Gongru, Yang Hua, Wang Xuelei, Yang Jinmin and Sun Wenqi. Rare Decays of the Top Quark in the Technicolor Model With a Massless Scalar Doublet[J]. Chinese Physics C, 1996, 20(5): 414-421.
Lu Gongru, Yang Hua, Wang Xuelei, Yang Jinmin and Sun Wenqi. Rare Decays of the Top Quark in the Technicolor Model With a Massless Scalar Doublet[J]. Chinese Physics C, 1996, 20(5): 414-421. shu
Milestone
Received: 1900-01-01
Revised: 1900-01-01
Article Metric

Article Views(1922)
PDF Downloads(513)
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:

Rare Decays of the Top Quark in the Technicolor Model With a Massless Scalar Doublet

    Corresponding author: Lu Gongru,
  • Department of Physics, Henan Normal University,Xinxiang 453002

Abstract: The rare decays t→cV(V=Z,γ,g)induced through loop diagrams are calculated in a minimal Technicolor model(MTC) with a massless weak doublet recently presented by C.D.Carone and H. Georgi.We find that these new contributions can enhance the SM branching fractions by as much as 3—4 orders of magnitude,i.e.,B(t→cZ)≈10,B(t→cγ)≈10-9, B(t→cg)≈10-6 for the favorable values of the parameters.It might provide a unique window to detect the virtual effects of technipions in MTC theory.

    HTML

Reference (1)

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return