https://doi.org/10.1140/epjc/s2005-02131-3
theoretical physics
New gauge bosons from the littlest Higgs modeland the process 
Department of Physics, Liaoning Normal University, 116029, Dalian, P.R. China
* e-mail: cxyue@lnnu.edu.cn
In the context of the littlest Higgs (LH) model, we study the process . We find that the new gauge bosons Z
H
and B
H
can produce significant correction effects on this process, which can be further enhanced by suitably polarized beams. In most of the parameter space preferred by the electroweak precision data, the absolute value of the relative correction parameter 
is larger than 5 %. As long as 
and 
the absolute value of the relative correction parameter 
is larger than 
. With reasonable values of the parameters of the LH model, the possible signals of the new gauge bosons B
H
and Z
H
can be detected via the process in the future LC experiments with the CM energy 
. B
H
exchange and Z
H
exchange can generate significantly corrections to the forward-backward asymmetry 
only in a small part of the parameter space.
© Springer-Verlag, 2005
