Araz, J. Y. , Corcella, G., Frank, M. and Fuks, B. (2018) Loopholes in Z′ searches at the LHC: exploring supersymmetric and leptophobic scenarios. Journal of High Energy Physics, 2018(2), 92. (doi: 10.1007/JHEP02(2018)092)
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Abstract
Searching for heavy vector bosons Z′, predicted in models inspired by Grand Unification Theories, is among the challenging objectives of the LHC. The ATLAS and CMS collaborations have looked for Z′ bosons assuming that they can decay only into Standard Model channels, and have set exclusion limits by investigating dilepton, dijet and, to a smaller extent, top-antitop final states. In this work we explore possible loopholes in these Z′ searches, by studying supersymmetric as well as leptophobic scenarios. We demonstrate the existence of realizations in which the Z′ boson automatically evades the typical bounds derived from the analyses of the Drell-Yan invariant-mass spectrum. Dileptonic final states can in contrast only originate from supersymmetric Z′ decays and are thus accompanied by additional effects. This feature is analyzed in the context of judiciously chosen bench-mark configurations, for which visible signals could be expected in future LHC data with a 4σ − 7σ significance. Our results should hence motivate an extension of the current Z′ search program to account for supersymmetric and leptophobic models.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Araz, Mr Jack |
| Authors: | Araz, J. Y., Corcella, G., Frank, M., and Fuks, B. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Journal of High Energy Physics |
| Publisher: | Springer |
| ISSN: | 1126-6708 |
| ISSN (Online): | 1029-8479 |
| Published Online: | 15 February 2018 |
| Copyright Holders: | Copyright © 2018 The Authors |
| First Published: | First published in Journal of High Energy Physics 2018(2): 92 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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