Exploring high scale seesaw models through a supersymmetric portal

• DOI: 10.48550/arxiv.2307.05550
• Publication Date: 2023-01-01
• Authors: Yi Liu; Stefano Moretti; Harri Waltari
• Keywords: Yukawa potential; Lepton number

The seesaw scale is a priori unknown. If the low, one may directly look for new particles predicted by models. high, such an approach unfeasible. We show that in some supersymmetric models large Yukawa couplings of high leave their fingerprints to Higgs-slepton and this can result decays type $\tilde{\nu}_{2}\rightarrow \tilde{\nu}_{1}h$ Type-I Type-III $\tilde{\ell}^{\pm}_{2}\rightarrow \tilde{\ell}^{\pm}_{1}h$ latter. Unfortunately current exclusion bounds make it impossible see significant signal even at High-Luminosity phase LHC. In paper, we highlight High-Energy LHC (with $\sqrt{s}=27$~TeV) could afford with sensitivity those single lepton channel.