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Please use this identifier to cite or link to this item: http://dspace.bits-pilani.ac.in:8080/jspui/handle/123456789/18446
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 𝐢⁒𝑃-violating (CPV) extended Higgs sectors via 𝑓⁑ Β― 𝑓 →𝑍*→𝐻1⁑𝐻2β†’4⁒𝛾 processes with 𝐻1,2 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 𝑣≃246  GeV. We show that the branching ratios of 𝐻1,2 →𝛾⁒𝛾 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 𝐻1,2 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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