Flavor-Changing Neutral-Current Production of t(c)over-bar in Association with a Neutral Top-Higgs at LHC in the Topcolor-Assisted Technicolor Model

被引：13
|
作者：
Lu Gong-Ru [1 ]
Wu Lei [1 ]
机构：
[1] Henan Normal Univ, Coll Phys & Informat Engn, Xinxiang 453007, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2010年 / 27卷 / 03期
基金：
中国国家自然科学基金;
关键词：
QUARK FCNC PROCESSES; SYMMETRY-BREAKING; RARE DECAYS; 3RD-FAMILY QUARKS; COUPLINGS; STANDARD; PHYSICS; PION; COLLIDERS; OPERATORS;
D O I：
10.1088/0256-307X/27/3/031401
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In the framework of the topcolor-assisted technicolor (TC2) model we investigate the flavor-changing neutral-current production pp -> t (c) over barh(t)(0) at the Large Hadron Collider (LHC), which proceeds through the parton-level processes gg -> t (c) over barh(t)(0), u (u) over bar -> t (c) over barh(t)(0), d (d) over bar -> t (c) over barh(t)(0). We calculate the production rate and present the distributions of the transverse momenta and the invarient mass of the neutral top-higgs. It is found that the cross section of pp -> t (c) over barh(t)(0) can reach a few hundreds of fb in a large part of the allowed parameter space. Considering the main decay mode of top-higgs for m(ht) < 2m(t), we find that such a production may provide copious events. In the case of unobservation, the LHC can set meaningful constraints on the TC2 model.
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页数：4
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