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

Chuan-Hung Chen, Cheng-Wei Chiang, Takaaki Nomura, Yu Fusheng

Published 2011-05-14, updated 2012-01-09Version 3

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.