Exploring high scale seesaw models through a supersymmetric portal
Exploring high scale seesaw models through a supersymmetric portal
The seesaw scale is a priori unknown. If the seesaw scale is low, one may directly look for the new particles predicted by seesaw models. If the seesaw scale is high, such an approach is unfeasible. We show that in some supersymmetric seesaw models the large Yukawa couplings of high scale seesaw models leave their fingerprints to Higgs-slepton couplings and that this can result in decays of the type ν~2→ν~1h in Type-I and Type-III seesaw models and ℓ~±2→ℓ~±1h in the latter. Unfortunately the current exclusion bounds make it impossible to see a significant signal even at the High-Luminosity phase of the LHC. In this paper, we highlight that the High-Energy phase of the LHC (with s√=27~TeV) could afford one with some sensitivity to those in the single lepton channel.
hep-ph
Liu, Yi
f94937a7-2a24-45c9-92b3-3726a1f3efa0
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Waltari, Harri
40b64912-03e3-4ed9-b3cd-b1951ab9b883
Liu, Yi
f94937a7-2a24-45c9-92b3-3726a1f3efa0
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Waltari, Harri
40b64912-03e3-4ed9-b3cd-b1951ab9b883
[Unknown type: UNSPECIFIED]
Abstract
The seesaw scale is a priori unknown. If the seesaw scale is low, one may directly look for the new particles predicted by seesaw models. If the seesaw scale is high, such an approach is unfeasible. We show that in some supersymmetric seesaw models the large Yukawa couplings of high scale seesaw models leave their fingerprints to Higgs-slepton couplings and that this can result in decays of the type ν~2→ν~1h in Type-I and Type-III seesaw models and ℓ~±2→ℓ~±1h in the latter. Unfortunately the current exclusion bounds make it impossible to see a significant signal even at the High-Luminosity phase of the LHC. In this paper, we highlight that the High-Energy phase of the LHC (with s√=27~TeV) could afford one with some sensitivity to those in the single lepton channel.
Text
2307.05550v1
- Author's Original
Available under License Other.
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Submitted date: 9 July 2023
Additional Information:
8 pages, 5 figures, 6 tables
Keywords:
hep-ph
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Local EPrints ID: 479928
URI: http://eprints.soton.ac.uk/id/eprint/479928
PURE UUID: 538c01c8-1250-4d0b-a414-86f789e56dba
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Date deposited: 28 Jul 2023 16:53
Last modified: 18 Mar 2024 02:57
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Author:
Yi Liu
Author:
Harri Waltari
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