科研之友
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摘要
Within the context of the topcolor-assisted technicolor (TC2) model we investigate the associated production of the neutral top-higgs h(t)(0) with a pair of top quarks, i.e pp -> t (t) over barh(t)(0) at the Large Hadron Collider (LHC), which proceeds through the partonic processes q (q) over bar -> t (t) over barh(t)(0) and gg -> t (t) over barh(t)(0). We calculate the production rate and show the distributions of the transverse momenta of h(t)(0). It is found that the cross section of pp -> t (t) over barh(t)(0) 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) over barh(t)(0) production and the top-charm decay mode of h(t)(0) for m(ht)(0) < 2m(t), the process pp -> t<(t)over bar>h(t)(0) can play an important role in the probe of neutral top-higgs and the test of the TC2 model.
