Associated production of the Higgs boson and a single top quark in the littlest Higgs model at Large Hadron Collider

• DOI: 10.1016/j.physletb.2009.04.035
• Publication Date: 2009-04-17T08:39:58Z
• Authors: Shuo Yang
• Keywords: High Energy Physics - Phenomenology; High Energy Physics - Phenomenology (hep-ph); 0103 physical sciences; FOS: Physical sciences; 01 natural sciences

In the context of the littlest Higgs model, we study the associated production of the Higgs boson and a top quark ($th$ production) at the CERN Large Hadron Collider (LHC). The cross sections for s-channel, t-channel processes and the relative correction for the total cross section are presented. In a part of parameter space, the cross sections can be distinctly deviated from the predictions of Standard Model. We also investigate the signal and backgrounds for the $th$ production at the LHC. However, due to the large QCD backgrounds, it is not very hopeful to directly observe the $th$ signal in most of the parameter space of LH model. It is found that with 30 fb$^{-1}$ of integrated luminosity, in a narrow range of the parameter space $c=0.8$ and $f\leq 1.62$ TeV, a statistical significance of 3$��$ can be achieved. More than 30 fb$^{-1}$ luminosity will enhance the significance and the possibility of detecting the signal.<br/>11 pages, 6 figures, 1 table. Accepted for publication in PLB<br/>