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arXiv · 1504.07840

Extra Higgses at LHC: the EW Road to Baryogenesis

Jose Miguel No
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Abstract

A cosmological first order electroweak phase transition could explain the origin of the matter-antimatter asymmetry in the Universe. Such a phase transition does not occur in the Standard Model, while it becomes possible with the existence of a second Higgs doublet in Nature. We obtain the properties of the new scalars $H_0$, $A_0$ and $H^{\pm}$ that lead to such a phase transition, showing that its characteristic signature at LHC would be the observation of the decay $A_0 \rightarrow H_0 Z$. We analyze the LHC search prospects for this decay in the $\ell \ell b\bar{b}$ and $\ell \ell W^{+} W^{-}$ final states, showing that either one is promising at the early stages of the 14 TeV run.

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Jose Miguel No. 2015-04-29. Extra Higgses at LHC: the EW Road to Baryogenesis. https://arxiv.org/abs/1504.07840

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