Dec 11 – 15, 2023
Saha Institute of Nuclear Physics
Asia/Kolkata timezone

Current status of the light neutralino thermal dark matter in the phenomenological MSSM

Dec 14, 2023, 5:30 PM
20m
Lecture Hall 2, Meghnad Saha Auditorium

Lecture Hall 2, Meghnad Saha Auditorium

Speaker

Rhitaja Sengupta (BCTP and Physikalisches Institut der Universität Bonn, Germany)

Description

Abstract: We explore the parameter space of the phenomenological Minimal Supersymmetric Standard Model (pMSSM) with a light neutralino thermal dark matter (m_{DM}≤m_{Higgs boson}/2) that is consistent with current collider and astrophysical constraints. We consider both positive and negative values of the higgsino mass parameter (μ). Our investigation shows that the recent experimental results from the LHC as well as from direct detection searches for dark matter by the LUX-ZEPLIN (LZ) collaboration rule out the Z-funnel region for the μ>0 scenario. The same results severely restrict the h-funnel region for positive μ, however, the allowed points can be probed easily with few more days of data from the LZ experiment. In the μ<0 scenario, we find that very light higgsinos in both the Z and h funnels might survive the present constraints from the electroweakino searches at the LHC, and dedicated efforts from experimental collaborations are necessary to make conclusive statements about their present status. We also study the impact of light stau sleptons on this parameter space.

Presentation materials