6–13 Jul 2022
Bologna, Italy
Europe/Rome timezone

Measuring neutrino dynamics in NMSSM with a right-handed sneutrino LSP at the ILC

9 Jul 2022, 16:00
15m
Room 10 (Magenta B)

Room 10 (Magenta B)

Parallel Talk Beyond the Standard Model Beyond the Standard Model

Speaker

Yi Liu

Description

We study the possibility of measuring neutrino Yukawa couplings in the Next-to-
Minimal Supersymmetric Standard Model with right-handed neutrinos (NMSSMr) when the lightest right-sneutrino is the Dark Matter (DM) candidate, by exploiting a ‘dijet + dilepton + Missing Transverse Energy’ (MET) signature. We show that, contrary to the minimal realisation of Supersymmetry (SUSY), the MSSM, wherein the DM candidate is typically a much heavier (fermionic) neutralino state, this extended model of SUSY offers one with a much lighter (bosonic) state as DM that can then be produced at the next generation of e+e− colliders with energies up to 500 GeV or so. The ensuing signal, emerging from chargino pair production and subsequent decay, is extremely pure so it also affords one with the possibility of extracting the Yukawa parameters of the (s)neutrino sector. Altogether, our results serve the purpose of motivating searches for light DM signals at such machines, where the DM candidate can have a mass around the Electro-Weak (EW) scale.

In-person participation No

Primary authors

Dr Harri Waltari (uppsala university) Prof. Stefano Moretti (university of southampton) Yi Liu

Presentation materials