Europhys. Lett.
Volume 76, Number 3, November 2006
Page(s) 381 - 387
Section The physics of elementary particles and fields
Published online 29 September 2006
Europhys. Lett., 76 (3), pp. 381-387 (2006)
DOI: 10.1209/epl/i2006-10282-6

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

Chong-Xing Yue, Shuo Yang and Li-Hong Wang

Department of Physics, Liaoning Normal University - Dalian 116029, PRC

received 12 July 2006; accepted in final form 7 September 2006
published online 29 September 2006

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 WH- 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 $pp\rightarrow t\bar{t}+X$ and $pp\rightarrow tW^{-}+X$ are very large, the values of the ratios NW and NX are very small in most of the parameter space. It is only possible to detect the signal of the gauge boson WH- via the process $pp\rightarrow gb+X\rightarrow
tW_{H}^{-}+X$ at the LHC in a small region of the parameter space.

12.60.Cn - Extensions of electroweak gauge sector.
14.65.Ha - Top quarks.
12.15.-y - Electroweak interactions.

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