Higgs stability and the 750 GeV diphoton excess

Salvio, Alberto and Mazumdar, Anupam (2016) Higgs stability and the 750 GeV diphoton excess. Physics Letters B, 755. pp. 469-474. ISSN 0370-2693

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Abstract

We study the implications of a possible unstable particle with mass MX<TeV for the Higgs stability, naturalness and inflation. We pay particular attention to the case MX≈750 GeV, suggested by recent results of ATLAS and CMS on diphoton final states, and work within the minimal model: we add to the Standard Model field content a pseudoscalar and a vector-like fermion carrying both color and electric charge. This can stabilize the electroweak vacuum without invoking new physics at very high energies, which would give an unnaturally large contribution to the Higgs mass. We also show that inflation can be obtained via a UV modification of General Relativity.

Item Type: Journal Article
Journal or Publication Title: Physics Letters B
Additional Information: © 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 78676
Deposited By: ep_importer_pure
Deposited On: 26 Apr 2016 09:02
Refereed?: Yes
Published?: Published
Last Modified: 21 Oct 2019 00:37
URI: https://eprints.lancs.ac.uk/id/eprint/78676

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