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 τνbbˉ 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 γγ, thereby compensating for a suppressed gluon-gluon fusion rate. The effect of scalar-pseudo-scalar mixing on loop-induced Higgs signals is also discussed.
@article{arxiv.1205.2692,
title = {LHC explores what LEP hinted at: CP-violating type-I 2HDM},
author = {Wolfgang Mader and Jae-hyeon Park and Giovanni Marco Pruna and Dominik Stöckinger and Arno Straessner},
journal= {arXiv preprint arXiv:1205.2692},
year = {2014}
}
Comments
25 pages, corrected a numerical error in Fig. 4 and a typo, conclusions unchanged