Wolfgang Mader, Jae-hyeon Park, Giovanni Marco Pruna, Dominik Stöckinger, Arno Straessner
The Large Hadron Collider is shown to have great scope for a light charged Higgs discovery, in the context of the CP-violating type-I two Higgs doublet model. This scenario with similar masses of H+ and W was suggested by the puzzling departure from charged current lepton universality found in the LEP data. With the lightest neutral Higgs mass set to 125 GeV, the charged-neutral Higgs associated production mechanism can cause a significant excess in the tau nu b b-bar events over a vast range of tan beta as long as the Higgs mixing pattern avoids a few limiting cases. Thanks to the low H+ mass, the charged Higgs loop can play a striking role in neutral Higgs decays into gamma gamma, thereby compensating for a suppressed gluon-gluon fusion rate. The effect of scalar-pseudo-scalar mixing on loop-induced Higgs signals is also discussed.
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http://arxiv.org/abs/1205.2692
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