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Extraction of neutrino Yukawa parameters from displaced vertices of sneutrinos

Chakraborty, A and Moretti, S and Shepherd-Themistocleous, CH and Waltari, H (2021) Extraction of neutrino Yukawa parameters from displaced vertices of sneutrinos. In: Journal of High Energy Physics, 2021 (6).

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Official URL: https://doi.org/10.1007/JHEP06(2021)027


We study displaced signatures of sneutrino pairs potentially emerging at the Large Hadron Collider (LHC) in a Next-to-Minimal Supersymmetric Standard Model supplemented with right-handed neutrinos triggering a Type-I seesaw mechanism. We show how such signatures can be established through a heavy Higgs portal, the sneutrinos then decaying to charged leptons and charginos giving rise to further leptons or hadrons. We finally illustrate how the Yukawa parameters of neutrinos can be extracted by measuring the lifetime of the sneutrino from the displaced vertices, thereby characterising the dynamics of the underlying mechanism of neutrino mass generation. We show our numerical results for the case of both the current and High-Luminosity LHC. © 2021, The Author(s).

Item Type: Journal Article
Publication: Journal of High Energy Physics
Publisher: Springer Science and Business Media Deutschland GmbH
Additional Information: The copyright for this article belongs to Authors
Department/Centre: Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Date Deposited: 24 Aug 2021 05:48
Last Modified: 24 Aug 2021 05:48
URI: http://eprints.iisc.ac.in/id/eprint/69245

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