A light charged Higgs boson in two-Higgs doublet model for CDF $Wjj$ anomaly

TL;DR

This paper proposes that a 140 GeV charged Higgs boson within the two-Higgs doublet model can explain the CDF $Wjj$ anomaly, while also analyzing its effects on B meson physics.

Contribution

It introduces a specific charged Higgs boson mass and couplings to explain the anomaly and examines flavor-changing effects to constrain the model.

Findings

Charged Higgs boson of ~140 GeV can account for the $Wjj$ excess.

Loop effects induce flavor-changing neutral currents affecting B mesons.

Like-sign charge asymmetry $A_{s ext{l}}^b$ can reach ${ m O}(10^{-3})$ in this scenario.

Abstract

Motivated by recent anomalous CDF data on $Wjj$ events, we study a possible explanation within the framework of the two-Higgs doublet model. We find that a charged Higgs boson of mass $\sim$ 140 GeV with appropriate couplings can account for the observed excess. In addition, we consider the flavor-changing neutral current effects induced at loop level by the charged Higgs boson on the $B$ meson system to further constrain the model. Our study shows that the like-sign charge asymmetry $A_{s\ell}^b$ can be of ${\cal O}(10^{-3})$ in this scenario.