Alladi Ramakrishnan Hall

Implication of dark matter spike around Sgr *A on the gamma-ray searches of Bino dark matter in MSSM

Abhijit Kumar Saha

Institute of Physics, Bhubaneswar

We study the impact of dark matter density spike around the Milky Way's supermassive black hole (SMBH), Sgr *A in probing the Bino-dominated neutralino dark matter (DM) within the MSSM, which typically produces relatively faint signals in the conventional DM halos. In particular, we explore the indirect search prospects of sub-TeV Bino-Higgsino and Bino-Wino-Higgsino DM in the MSSM, consistent with the supersymmetric predictions required to explain the anomalous magnetic moment of the muon. Typical over-abundance of Bino DM is ameliorated with slepton and/or Wino coannihilations. The lightest neutralino, thus, is associated with a compressed supersymmetric particle spectrum, which, in general, is challenging to probe at conventional LHC searches. Accommodating the inclusive effects of density spike, here, we present the requisite boost factor to facilitate $\gamma-$ray searches of Bino-dominated DM in the MSSM, complementing the spin independent direct search experiments.