Effective bounds on asymmetric dark matter

by Arnab Roy (Monash University)

Friday 23 Aug 2024, 12:00 → 13:00 Australia/Sydney

In this talk, I will reassess the viability of asymmetric dark matter (ADM). ADM is conceptualized as a Dirac fermion that primarily interacts with Standard Model fermions. By using an effective-interaction framework to analyze the interactions between this DM and quarks/leptons, we derive updated constraints based on mono-jet searches from the Large Hadron Collider (LHC) and mono-photon searches at the Large Electron-Positron (LEP) collider. The requirement for efficient annihilation of the symmetric component of ADM, alongside other observational constraints, is synthesized to provide a comprehensive overview. This shows that ADM within a mass range of 1–100 GeV is strongly constrained, effectively ruling out this favored mass range. However, we find that leptophilic ADM remains viable for dark matter with a mass of 10 GeV or greater when considering collider bounds, direct detection, and stellar heating. Finally, I will discuss the prospects of Future Circular Collider for electron-positron collisions (FCC-ee) to probe the yet unconstrained region.