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Title: | Multiphoton signatures as a probe of violation in extended Higgs sectors |
Authors: | Mondal, Tanmoy |
Keywords: | Physics Electric dipole moments (EDMs) Fermiophobic |
Issue Date: | Feb-2024 |
Publisher: | APS |
Abstract: | We propose a novel signature with four-photon final states to probe πΆβ’π-violating (CPV) extended Higgs sectors via πβ‘ Β― π βπ*βπ»1β‘π»2β4β’πΎ processes with π»1,2 being additional neutral Higgs bosons. We focus on the nearly Higgs alignment scenario, in which the discovered Higgs boson almost corresponds to a neutral scalar state belonging to the isospin doublet field with the vacuum expectation value π£β246ββGeV. We show that the branching ratios of π»1,2 βπΎβ’πΎ can simultaneously be sizable when CPV phases in the Higgs potential are of order one due to the enhancement of charged-Higgs boson loops. Such branching ratios can be especially significant when the fermiophobic scenario is taken into account. As a simple example, we consider the general two Higgs doublet model, and demonstrate that the cross section for the four-photon process can be 0.1 fb at LHC with the masses of π»1,2 to be a few 100 GeV in the Higgs alignment limit under the constraints from electric dipole moments (EDMs) and LHC Run-II data. We also illustrate that the searches for EDMs and diphoton resonances at high-luminosity LHC play complementary roles to explore CPV extended Higgs sectors. |
URI: | https://journals.aps.org/prd/abstract/10.1103/PhysRevD.109.033002 http://dspace.bits-pilani.ac.in:8080/jspui/handle/123456789/18446 |
Appears in Collections: | Department of Physics |
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