Associated Production of a Neutral Top-Higgs with Top Quark Pairs at the LHC within the TC2 model  

作　　者：LI Bing-Zhong HAN Jin-Zhong 李炳中;韩金钟(College of Physics and Information Engineering,Henan Normal University,Xinxiang 453007;College of Physics and Electronic Engineering,Xinyang Normal University,Xinyang 464000)

机构地区：[1]College of Physics and Information Engineering,Henan Normal University,Xinxiang 453007 [2]College of Physics and Electronic Engineering,Xinyang Normal University,Xinyang 464000

出　　处：《Chinese Physics Letters》2011年第4期67-70,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 10775039;the Specialized Research Fund for the Doctoral Program of Higher Education under Grant No 20094104110001;and the Program for Youths’Talents of Xinyang Normal University under Grant No 200950。

摘　　要：Within the context of the topcolor-assisted technicolor(TC2)model we investigate the associated production of the neutral top-higgs hto with a pair of top quarks,i.e.pp→t_(t)hto at the Large Hadron Collider(LHC),which proceeds through the partonic processes q(q)→t_(t)hto and gg→t_(t)hto.We calculate the production rate and show the distributions of the transverse momenta of hto.It is found that the cross section of pp→t_(t)hot can reach a few hundred fb in the most part of the allowed parameter space and even a few tens of pb for the light top-higgs.Due to the large cross section of t_(t)hto production and the top-charm decay mode of h0t for mhto<2mt,the process pp→t_(t)hto can play an important role in the probe of neutral top-higgs and the test of the TC2 model.

关 键 词：NEUTRAL allowed QUARK 

分 类 号：O57[理学—粒子物理与原子核物理]