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Single top production associated with a neutral scalar at LHC in topcolor-assisted technicolor
The topcolor-assisted technicolor(TC2)model predicts a number of neutral SCalars like the top-pion (π0t)and the top-Higgs(h0t).These scalar8 have flavor-changing neutral-current(FCNC)top quark couphngs,among which the top-charm transition couplings may be sizable.Such FCNC couplings induce single top productions associated with a neutral scalar at the CERN Large Hadron Collider(LHC)through the parton processes cg→tπ0t and cg→th0t.In this paper we examine these productions and find their production rates can exceed the 3σ sensitivity of the LHC in a large part of parameter space.Since in the Standard Model and the minimal supersymmetric model such rare productions have unobservably small production rates at the LHC.these rare processes will serve as a good probe for the TC2 model.
作 者： LIU Guo-Li ZHANG Huan-Jun 作者单位： LIU Guo-Li(Department of Physics,Zhengzhou University,Henan 450052,China)ZHANG Huan-Jun(Department of Physics,Henan Normal University,Xinxiang 453007,China)
刊 名： 中国物理C（英文版） ISTIC 英文刊名： CHINESE PHYSICS C 年，卷(期)： 2008 32(9) 分类号： O4 关键词： top quark technicolor LHC【Single top production associated wit】相关文章：
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