# SEMINAR

Are There Hidden Scalars in LHC Higgs Results?
* Pedro M. Ferreira*
(**ISEL and CFTC-Uni. Lisboa**)

**Anfiteatro PA1, IST, PavilhÃ£o MatemÃ¡tica**

**Tuesday, December 10th, 2013 at 05:00 PM**

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**Abstract**
`
The Higgs boson was recently discovered at the LHC, and we now have plnety
of data concerning the behaviour of the scalar sector. Within the two-Higgs
doublet model (2HDM), three extra scalar particles (two neutral and one
charged) are predicted, and we analyse what the current LHC data tells
us about their existence. The fact that we have not yet observed such particles
in seaches for W, Z and tau pairs is easily accomodated within the 2HDM,
although it constrains the model's parameter space.
Of greater interest is the possibility that the heavier scalar states are being
produced at the LHC but decay to states involving other scalars, namely the
lightest Higgs h. For a wide range of 2HDM parameters this is an exciting
possibility, meaning that the extra scalars would be revealed through an enhanced
number of produced Higgs h.
`

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