Single charged Higgs boson production at the LHC

Abstract

A search for charged Higgs may yield clear and direct signs of new physics outside the realm of the Standard Model (SM). In the Two-Higgs Doublet Model (2HDM), we investigate two of the main single charged Higgs production channels at the Large Hadron Collider (LHC), assuming that either $h$ or $H$ replicates the detected resonance at $\sim 125\mathrm{GeV}$. We consider the possibility of the charged Higgs boson production through the $pp\to H^{\pm }{W}^{\mp }$ and $pp\to H^{\pm }bj$ production processes that may present additional significance at the LHC experiments. Considering the $H^{\pm }\to W^{\pm }{h}_i/A$ decay channels and mainly concentrating on the $b\bar{b}$, $\tau \tau$ and $\gamma \gamma$ decays of $h_i$ and $A$, we examine the possible signatures arising from the aforementioned charged Higgs production and decay in both type-I and type-X realizations of 2HDM. Our study shows that these signatures can have sizable rates at low $\tan \beta$ as long as the condition $M_{H^{\pm }}<m_t-m_b$ is satisfied. As a result, we propose the $bb$, $\tau \tau$ and $\gamma \gamma$ final states associated with $WW$ or $Wbj$ as an encouraging experimental avenue that would complement the LHC search for a charged Higgs boson.

Comments: Paper about Single charged Higgs boson production at the LHC, 17 pages, 11 figures, to be submitted to PLB