Search for a lighter Higgs in Two Higgs Doublet Models
Giacomo Cacciapaglia, Aldo Deandrea, Suzanne Gascon, Solene Le Corre,, Morgan Lethuillier, Junquan Tao
TL;DR
This paper explores the potential to detect a lighter neutral scalar or pseudo-scalar Higgs in Two Higgs Doublet Models using current and future LHC data, encouraging experimental searches for light diphoton resonances.
Contribution
It provides a simplified analysis indicating that new constraints on lighter Higgs particles could be obtained at the LHC, promoting targeted experimental searches.
Findings
Some lighter Higgs particles are not yet excluded by current data.
A simplified analysis suggests new constraints could be achieved with dedicated LHC searches.
Encourages ongoing light diphoton resonance searches at 13 TeV.
Abstract
We consider present constraints on Two Higgs Doublet Models, both from the LHC at Run 1 and from other sources in order to explore the possibility of constraining a neutral scalar or pseudo-scalar particle lighter than the 125 GeV Higgs boson. Such a lighter particle is not yet completely excluded by present data. We show with a simplified analysis that some new constraints could be obtained at the LHC if such a search is performed by the experimental collaborations, which we therefore encourage to continue carrying out light diphoton resonance searches at 13 TeV in the context of Two Higgs Doublet Models.
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