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Abstract:
In a realistic effective one-family extended technicolor(ETC)model without exact custodial symmetry, we calculate the one-loop corrections to the Zbb and Zτ+τ- vertices from the sideways and diagonal ETC gauge boson exchange.The results show that both the Z→ bb partial Width Γb and branching ratio Rb and the τ polarization asymmetry parameter Aτ are enhanced by the corrections and are in agreement with the present experimental data.
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References
[1]
|
K.Hagiwara,Implications of Precision Electroweak Data,talk presented at 17th International Symposiumonon Lepton-Photon Interactions,August10-15,1995,Beijing.[2] M.E.Peskin,T.Tacheuchi,iPhys/i.iRev/i,D46(1992)381.[3] R.S.Chivukula et al,iPhys/i.iRev/i iLett/i.69(1992)575;R.S.Chivukula et al,iPhys/i iLett/i,311B(1993)157;N.Evans,iPhys/iiLett/i,B331(1994)378.[4] T.Appelquist J.Terning,iPhys/i.iLett/i,B315(1993)139;T.Appekquist,J.Terning,iPhys/i iRev/i.D50(1994)2116. [5] N.kitazawa,iPhys/i iLett/i,B313(1993)393.[6] Guo-Hong Wu,iPhys/i iRev/i.iLett/i,74(1995)4137.[7] B.Holdom,iPhys/i.iLett/i,B339(1994)114.[8] Z.Xiao,L.Wan,G.Lu et al.,J.iPhys/i.,G20(1994)901. |
-
[1] |
HU Xi-Duo
, SHAO Ming-Zhu
, LUO Shi-Yu
, LIU Yong-Sheng
, ZHU De-Hai
. Average Field Idea and Single Particle Model for 2 Dimension Crystallization Beams(Ⅱ). Chinese Physics C,
2004, 28(2): 196-199. |
[2] |
Guo Hua
. In-medium QMC Model Parameters and Quark Condensation in Nuclear Matter. Chinese Physics C,
1999, 23(5): 459-468. |
[3] |
ZHU Xiang
, SHEN Wen-Qing
, HU Xiao-Qing
, ZHU Yong-Tai
, WANG Bing
. A SIMPLE MODEL ANALYSIS OF THE INCOMPLETE DIC REACTION. Chinese Physics C,
1990, 14(9): 835-841. |
[4] |
WU Zhong-Li
. ANALYSIS OF THE MOMENTUM DISTRIBUTION WIDTH OF THE PREOJECTILE-LIKE-FRAGMENT FROM HEAVY ION COLLISIONS. Chinese Physics C,
1989, 13(8): 752-754. |
[5] |
WANG Man
, LI Jin
, CUI Xiang-Zong
, XIA Xiao-Mi
, LAI Yuan-Fen
, YAO Xiao-Guang
. PROTOTYPE OF END CAP SHOWER COUNTERAND ITS BEAM TEST. Chinese Physics C,
1987, 11(3): 321-326. |
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