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Higher-spin particles at high-energy colliders

Criado, Juan C.; Djouadi, Abdelhak; Koivunen, Niko; Raidal, Martti; Veermäe, Hardi

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Authors

Juan C. Criado

Abdelhak Djouadi

Niko Koivunen

Martti Raidal

Hardi Veermäe



Abstract

Using an effective field theory approach for higher-spin fields, we derive the interactions of colour singlet and electrically neutral particles with a spin higher than unity, concentrating on the spin-3/2, spin-2, spin-5/2 and spin-3 cases. We compute the decay rates and production cross sections in the main channels for spin-3/2 and spin-2 states at both electron-positron and hadron colliders, and identify the most promising novel experimental signatures for discovering such particles at the LHC. The discussion is qualitatively extended to the spin-5/2 and spin-3 cases. Higher-spin particles exhibit a rich phenomenology and have signatures that often resemble the ones of supersymmetric and extra-dimensional theories. To enable further studies of higher-spin particles at collider and beyond, we collect the relevant Feynman rules and other technical details.

Citation

Criado, J. C., Djouadi, A., Koivunen, N., Raidal, M., & Veermäe, H. (2021). Higher-spin particles at high-energy colliders. Journal of High Energy Physics, 2021(5), Article 254. https://doi.org/10.1007/jhep05%282021%29254

Journal Article Type Article
Online Publication Date May 27, 2021
Publication Date 2021
Deposit Date Jul 14, 2021
Publicly Available Date Jul 14, 2021
Journal Journal of High Energy Physics
Print ISSN 1126-6708
Publisher Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed Peer Reviewed
Volume 2021
Issue 5
Article Number 254
DOI https://doi.org/10.1007/jhep05%282021%29254

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
Open Access . 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.




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