Abstract
Limits on dark matter spin dependent elastic scattering cross section on protons derived from IceCube data are obtained for different dark matter annihilation channels using micrOMEGAs. The uncertainty on the derived limits, estimated by using different neutrino spectra, can reach a factor two. For all dark matter annihilation channels except for quarks, the limits on the spin dependent cross section are more stringent than those obtained in direct detection experiments. The new functions that allow to derive those limits are described.
Highlights
(MSSM) using the neutrino flux from DM capture in the Sun with IceCube was examined in [11]
We investigate the constraints that can be derived from IceCube data within two sample DM models, a Z-portal model [32] and U(1) extensions of the MSSM with a neutralino DM [33, 34]
We have shown that upper limits on spin dependent interactions of DM with protons obtained from IceCube22 data are stronger than those from direct detection in a variety of channels and for a large range of masses above 100 GeV
Summary
DM particles concentrate in the center of the Sun and annihilate into Standard Model particles. These SM particles further decay producing neutrinos that can be observed at the Earth. The computation of the capture rate in micrOMEGAs is described in [14] and involves a contribution from spin independent and spin dependent interactions of DM on nuclei. The total neutrino (antineutrino) spectrum at the Earth is proportional to the capture rate and features a dependence on the DM annihilation channel dφν dEν. The distribution of the number of events in the detector, Ns, will depend on the flux of muon neutrinos. Where Aν(E) and Aν(E) are the effective area of the detector for neutrinos and antineutrinos respectively
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