ILC Workshop on Potential Experiments (ILCX2021)

Searching for Lepton Portal Dark Matter at Linear Colliders

27 Oct 2021, 14:00

20m

Room #4 (Zoom Meeting ID: 840 3553 0145)

Oral presentation using Zoom Session H: BSM particle production H-1: BSM particle production

Speaker

Dr Adil Jueid (Korea Institute for Advanced Studies)

Description

In this talk, I discuss the phenomenology of a minimal model for GeV-scale Majorana dark matter (DM) coupled to the standard model lepton sector via a charged scalar singlet. The theoretical framework extends the Standard Model by two $SU(2{)}_L$ singlets: one charged Higgs boson and a singlet right-handed fermion. The latter plays the role of the DM candidate. We show that there is an anti-correlation between the spin-independent DM-Nucleus scattering cross-section (${\sigma }_{\mathrm{S}\mathrm{I}}$) and the DM relic density for parameters values allowed by various theoretical and experimental constraints. Moreover, we find that even when DM couplings are of order unity, ${\sigma }_{\mathrm{S}\mathrm{I}}$ is below the current experimental bound but above the neutrino floor. Furthermore, we show that the considered model can be probed at High Energy lepton colliders using e.g. the mono-Higgs production and same-sign charged Higgs pair production.

Presentation materials

ILC2021X_AJ.pdf