12-20 July 2017
BEXCO
Asia/Seoul timezone
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Contribution

BEXCO - Room D(109/110)

[DM019] Indirect searches of Galactic diffuse dark matter in INO-ICAL detector

Speakers

  • Amina KHATUN

Primary authors

Co-authors

Description

The signatures for the existence of dark matter are revealed only through its gravitational interaction. Theoretical arguments support the Weakly Interactive Massive Particle (WIMP) can be a class of dark matter and WIMP can annihilate and/or decay to Standard Model particles, among which neutrino is a favorable candidate. We show that the proposed 50 kton Magnetized Iron CALorimeter (MagICAL) detector under the India-based Neutrino Observatory (INO) project can play an important role in the indirect searches of Galactic diffuse dark matter in the neutrino and antineutrino mode separately. We present the sensitivity of 500 kt$cdot$yr MagICAL detector to set limits on the velocity-averaged self-annihilation cross-section ($langlesigma v angle$) and decay life time ($ au$) of dark matter having mass in the range of 2 GeV $leq m_chi leq $ 100 GeV and 4 GeV $leq m_chi leq $ 200 GeV respectively, assuming no excess over conventional atmospheric neutrino and antineutrino fluxes at the INO site. Our limits for low mass dark matter constrain the parameter space which has not been explored before. We show that MagICAL will be able to set competitive constraints, $langlesigma v angleleq 1.87 imes 10^{-24}$ cm$^3$,s$^{-1}$ for $chichi ightarrow uar u$ and $ augeq 4.7 imes 10^{24}$ s for $chi ightarrow uar u$ at 90$%$ C.L. (1 d.o.f.) assuming $m_chi$ = 10 GeV.