Abstract
We study an extension of the minimal supersymmetric standard model (MSSM) with additional right-handed singlet neutrino superfields in the context of a natural SUSY spectra, i.e., focusing on low values of the Higgsino mass parameter. While such an extension incorporates a mechanism for the neutrino mass, it also opens up the possibility of having right-sneutrinos (\(\widetilde{\nu }\)) as the lightest supersymmetric particle (LSP). Considering prompt decays of the Higgsino-like states, we consider leptonic channels at the large Hadron collider (LHC) and conclude that mono-lepton and opposite-sign di-lepton channels with low hadronic activity would be extremely useful channels to look for sneutrino LSP while same-sign di-lepton would serve as a strong confirmatory channel for discovery.
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Chatterjee, A., Dutta, J., Kumar Rai, S. (2021). Light Higgsinos at the LHC with Right-Sneutrino LSP. In: Behera, P.K., Bhatnagar, V., Shukla, P., Sinha, R. (eds) XXIII DAE High Energy Physics Symposium. DAEBRNS HEPS 2018 2018. Springer Proceedings in Physics, vol 261. Springer, Singapore. https://doi.org/10.1007/978-981-33-4408-2_30
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DOI: https://doi.org/10.1007/978-981-33-4408-2_30
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