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arXiv · 2409.19643

$4b + X$ via electroweak multi-Higgs production as smoking gun signals for Type-I 2HDM at the LHC

Prasenjit Sanyal·Tanmoy Mondal·Stefano Moretti·Shoaib Munir
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Abstract

Extending the Standard Model (SM) by one additional Higgs doublet leads to the Two-Higgs Doublet Model (2HDM). A specific charge assignment of the SM fermions under the $\mathbb{Z}_2$ symmetry leads to the Type-I 2HDM. A key feature of the Type-I 2HDM is that all the additional Higgs bosons can be fermiophobic, when their couplings to the SM fermions are suppressed. As a result, all the new Higgs states can be fairly light, $\sim$100 GeV or less, without being in conflict with the current data from the direct Higgs boson searches and the $B$-physics measurements. In a recent study Ref.~\cite{Mondal:2023wib}, which this proceeding is based on, we established that the new neutral as well as the charged Higgs bosons in this model can all be simultaneously observable in the multi-$b$ final state. An experimental validation of our results would be a clear indication that the true underlying Higgs sector in nature is the Type-I 2HDM.

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Prasenjit Sanyal, Tanmoy Mondal, Stefano Moretti, Shoaib Munir. 2024-09-29. $4b + X$ via electroweak multi-Higgs production as smoking gun signals for Type-I 2HDM at the LHC. https://arxiv.org/abs/2409.19643

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