Guo-Li Liu, Fei Wang, Shuo Yang
Many new physics models beyond the standard model ($SM$) can give rise to the large charged Higgs couplings $H^-q\bar b$ and $H^+b\bar q$, where $q=t$ or the new vector-like heavy quark $T$, which are predicted in many new physics models, such as the littlest higgs (LH) models and the left right twin higgs Models (LRTH); On the other hand, some new physics models like the LH also predict the gauge-higgs couplings. Such couplings may have sizable collider phenomenology. We focus our attention on these couplings induced by the LH and the LRTH models and consider their contributions to the production cross section for $W^\pm H^\mp$ production at the $LHC$. We find that the cross sections in the LH models on the parton level $ gg \to W^\pm H^\mp$ and $q\bar q \to W^\pm H^\mp$ ($q=u,d,s,c,b$) may reach tens of several dozen femtobarns in reasonable parameters space at 14 TeV. The cross section can even reach a few hundred femtobarns in certain favored space. The total cross section of the production $W^\pm H^\mp$ can reach a few hundred femtobarns in quite a large parameter space. While in LRTH, the production rates are basically one order lower than these in LH. Therefore, due to the large cross sections of that in the LH, it may be possible to probe the charged higgs via this process in a large parameter space.
View original:
http://arxiv.org/abs/1302.1840
No comments:
Post a Comment