Search for neutrino emission from relic dark matter in the Sun with the Baikal NT200 detector

Abstract

We have analyzed a data set taken over 2.76 years live time with the Baikal neutrino telescope NT200. The goal of the analysis is to search for neutrinos from dark matter annihilation in the center of the Sun. Apart from the conventional annihilation channels $b\bar{b}$, $W^{+}{W}^{-}$ and ${\tau }^{+}{\tau }^{-}$ we consider also the annihilation of dark matter particles into monochromatic neutrinos. From the absence of any excess of events from the direction of the Sun over the expected background, we derive 90% upper limits on the fluxes of muons and muon neutrinos from the Sun, as well as on the elastic cross sections of dark matter scattering on protons.

14 pages, 8 figures

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• Status, Challenges and Directions in Indirect Dark Matter Searches
• Effective field theory interpretation of searches for dark matter annihilation in the Sun with the IceCube Neutrino Observatory
• $\chi$aro$\nu$: a tool for neutrino flux generation from WIMPs
• WIMP capture and annihilation in the Earth in effective theories
• WIMP capture by the Sun in the effective theory of dark matter self-interactions
• Conservative constraints on the effective theory of dark matter-nucleon interactions from IceCube: the impact of operator interference
• Neutrino Topology Reconstruction at DUNE and Applications to Searches for Dark Matter Annihilation in the Sun
• Capture rate of weakly interacting massive particles (WIMPs) in binary star systems
• Limits on Kaluza-Klein dark matter annihilation in the Sun from recent IceCube results
• Assessing the sensitivity of PINGU to effective dark matter-nucleon interactions