Single production of charged gauge bosons from little Higgs models in association with top quark at the $LHC$

Abstract

In the context of the little Higgs models, we discuss single production of the new charged gauge bosons in association with top quark at the $CERN$ Large Hadron Collider$(LHC)$. We find that the new charged gauge bosons $W_H^{-}$ and $X^{-}$, which are predicted by the littlest Higgs model and the SU(3) simple model, respectively, can be abundantly produced at the $LHC$. However, since the main backgrounds coming from the processes $pp\to t\bar{t}+X$ and $pp\to t{W}^{-}+X$ are very large, the values of the ratios $N_W$ and $N_X$ are very small in most of the parameter space. It is only possible to detect the signal of the gauge boson $W_H^{-}$ via the process $pp\to gb+X\to t{W}_H^{-}+X$ at the $LHC$ in a small region of the parameter space.

Comments: 14pages, 4 figures. To be published in Europhysics Letters