# A Novel Experimental Search Channel for Very Light Higgses in the 2HDM Type I

- Institution: CERN
- Department: Workshops
- Speaker: Souad Semlali
- Year: 2022
- Language: English
- Subjects: Physics
- Source: [CERN](https://videos.cern.ch/record/3016166)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

We present a reinterpretation study of existing results from the CMS Collaboration, specifically, searches for light Beyond the Standard Model (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, $pp\to H_{\rm SM}\to ZA\to ZZ h$, with $ZZ\to jj \mu^+\mu^-$ and $h\to b\bar b$. We investigate the significance of a potentially visible signal through a full Monte Carlo simulation down to the {parametrised} detector level and show that it is an alternative promising channel to standard four-body searches for light BSM Higgses at the LHC already with an integrated luminosity of ${\cal L} = 300~{\rm fb}^{-1}$. For a tenfold increase of the latter, discovery should be possible over most of the allowed parameter space..

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## Lectures

1. [A Novel Experimental Search Channel for Very Light Higgses in the 2HDM Type I](https://invisiblenetwork.ai/learn/cern/3016166/2bc6f7c1d717), 17 min (CERN's player)