Constraints on cross section and lifetime of dark matter with HAWC Observations of dwarf Irregular galaxies

It has been shown that the dynamics of dwarf Irregular (dIrr) galaxies are dominated by dark matter. It is also observed that these galaxies have low star formation rates and metallicities, and no gamma-ray emission at ultra very high energies is expected. Because of their distance, dark mattercontent and vast number, dIrr galaxies are good targets to perform indirect dark mattersearches by ground-based and wide fieldof viewgamma-ray experiments, like HAWC. We analyzed data at the position of 31 dIrr galaxies within the HAWC field-of- viewand no significant excess was found. Here, we present the individual and combined limits on the annihilation cross-section and decay lifetime of weakly interacting massive particleswith a mass between 1 and 100 TeV.