Photo-production of a 750 GeV di-photon resonance mediated by Kaluza-Klein leptons in the loop

Abel, Steven; Khoze, Valentin V.

doi:10.1007/jhep05(2016)063

Photo-production of a 750 GeV di-photon resonance mediated by Kaluza-Klein leptons in the loop

Abel, Steven; Khoze, Valentin V.

Authors

Professor Steve Abel s.a.abel@durham.ac.uk
Professor

Professor Valentin Khoze valya.khoze@durham.ac.uk
Professor

Abstract

We consider the phenomenology of a 750 GeV resonance X which can be produced at the LHC by only photon fusion and subsequently decay into di-photons. We propose that the spin-zero state X is coupled to a heavy lepton that lives in the bulk of a higher-dimensional theory and interacts only with the photons of the Standard Model. We compute the di-photon rate in these models with two and more compact extra dimensions and demonstrate that they allow for a compelling explanation of the di-photon excess recently observed by the ATLAS and CMS collaborations. The central role in our approach is played by the summation over the Kaluza-Klein modes of the new leptons, thus providing a significant enhancement of the X→γγ loops for the production and decay subprocesses. It is expected that the jet activity accompanying these purely electromagnetic (at the partonic level) processes is numerically suppressed by factors such as α2emCqq¯/Cγγ∼10−3.

Citation

Abel, S., & Khoze, V. V. (2016). Photo-production of a 750 GeV di-photon resonance mediated by Kaluza-Klein leptons in the loop. Journal of High Energy Physics, 2016(5), Article 063. https://doi.org/10.1007/jhep05%282016%29063

Journal Article Type	Article
Acceptance Date	Apr 26, 2016
Online Publication Date	May 11, 2016
Publication Date	May 11, 2016
Deposit Date	May 2, 2016
Publicly Available Date	May 6, 2016
Journal	Journal of High Energy Physics
Print ISSN	1126-6708
Publisher	Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed	Peer Reviewed
Volume	2016
Issue	5
Article Number	063
DOI	https://doi.org/10.1007/jhep05%282016%29063
Related Public URLs	https://arxiv.org/abs/1601.07167

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© The Author(s) 2016 This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.