Extended Higgs boson sectors, effective field theory, and Higgs boson phenomenology

Anisha, , Banerjee, U., Chakrabortty, J., Englert, C. and Spannowsky, M. (2021) Extended Higgs boson sectors, effective field theory, and Higgs boson phenomenology. Physical Review D, 103(9), 096009. (doi: 10.1103/PhysRevD.103.096009)

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We consider the phenomenological implications of charged scalar extensions of the SM Higgs sector in addition to EFT couplings of this new state to SM matter. We perform a detailed investigation of modifications of loop-induced decays of the 125 GeV Higgs boson, which receives corrections from the propagating charged scalars alongside one-loop EFT operator insertions and demonstrate that the interplay of H → γ γ and H → Z γ decays can be used to clarify the additional states phenomenology in case a discovery is made in the future. In parallel, EFT interactions of the charged Higgs can lead to a decreased sensitivity to the virtual presence of charged Higgs states, which can significantly weaken the constraints that are naively expected from the precisely measured H → γ γ branching ratio. Again H → Z γ measurements provide complementary sensitivity that can be exploited in the future.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Englert, Professor Christoph
Authors: Anisha, , Banerjee, U., Chakrabortty, J., Englert, C., and Spannowsky, M.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review D
Publisher:American Physical Society
ISSN (Online):2470-0029
Published Online:12 May 2021
Copyright Holders:Copyright © 2021 American Physical Society
First Published:First published in Physical Review D 103(9): 096009
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
306883Research in Particle Physics Theory - Phenomenology from lattice QCD and collider physicsChristine DaviesScience and Technology Facilities Council (STFC)ST/T000945/1P&S - Physics & Astronomy