Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-09-12
Europhys.Lett.76:381-387,2006
Physics
High Energy Physics
High Energy Physics - Phenomenology
14pages, 4 figures. To be published in Europhysics Letters
Scientific paper
10.1209/epl/i2006-10282-6
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 $pp\to tW^{-}+X$ 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 $pp\to gb+X\to tW_{H}^{-}+X$ at the $LHC$ in a small region of the parameter space.
Wang Li-Hong
Yang Shuo
Yue Chong-Xing
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