Jul 6 – 13, 2022
Bologna, Italy
Europe/Rome timezone

A novel experimental search channel for very light Higgses in the Type-I 2HDM

Jul 8, 2022, 11:15 AM
15m
Room 5 (Avorio)

Room 5 (Avorio)

Parallel Talk Higgs Physics Higgs Physics

Speaker

Dr Souad Semlali (School of Physics and Astronomy, University of Southampton)

Description

We present a reinterpretation study of existing results from the CMS Collaboration, specifically, searches for light BSM Higgs pairs produced in the chain decay $pp\to H_{\rm SM}\to hh(AA)$ into a variety of final states, in the context of the CP-conserving 2-Higgs Doublet Model (2HDM) Type-I. Through this, we test the LHC sensitivity to a possible new signature, $pp\to H_{SM}\to ZA\to ZZ h$, with $ZZ\to jj \mu^+\mu^-$ and $h_{SM}\to b\bar b$. We perform a systematic scan over the 2HDM Type-I parameter space, by taking into account all available theoretical and experimental constraints, in order to find a region with a potentially visible signal. We investigate the significance of it through a full Monte Carlo simulation down to the detector level. We show that such a signal is an alternative promising channel to standard four-body searches for light BSM Higgses at the LHC with an integrated luminosity of $L = 300/$fb.

In-person participation Yes

Primary authors

Prof. Claire H. Shepherd-Themistocleous (Particle Physics Department, Rutherford Appleton Laboratory, United Kingdom) Dr Souad Semlali (School of Physics and Astronomy, University of Southampton) Prof. Stefano Moretti (School of Physics and Astronomy, University of Southampton)

Presentation materials