The single t-quark productions via the flavor-changing processes in the topcolor-assisted technicolor model at the hadron colliders

Details The single t-quark productions via the flavor-changing processes in the topcolor-assisted technicolor model at the hadron colliders The single t-quark productions via the flavor-changing processes in the topcolor-assisted technicolor model at the hadron colliders

2006-12-06

arxiv.org/abs/hep-ph/0612063v1

Commun.Theor.Phys.49:193-198,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 10 figures

Scientific paper

10.1088/0253-6102/49/1/40

In the framework of topcolor-assisted technicolor(TC2) model, there exist tree-level flavor-changing (FC) couplings which can result in the loop-level FC coupling $tcg$. Such $tcg$ coupling can contribute significant clues at the forthcoming Large Hadron Collider (LHC) experiments. In this paper, based on the TC2 model, we study some single t-quark production processes involving $tcg$ coupling at the Tevatron and LHC: $pp(p\bar{p})\to t\bar{q}(q=u,d,s),tg$. We calculate the cross sections of these processes. The results show that the cross sections at the Tevatron are too small to observe the signal, but at the LHC it can reach a few pb. With the high luminosity, the LHC has considerable capability to find the single t-quark signal produced via some FC processes involving coupling $tcg$. On the other hand, these processes can also provide some valuable information of the coupling $tcg$ with detailed study of the processes and furthermore provide the reliable evidence to test the TC2 model.

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