Effects of interactions between astrophysical neutrinos and ultralight dark matter particles

MATÍAS M. REYNOSO; OSCAR A. SAMPAYO; AGUSTÍN M. CARULLI

Rosario

Congreso; 62ª Reunión Anual de la Asociación Argentina de Astronomía; 2020

In this work, we study the propagation of high energy neutrinos produced in extragalactic sourcesincluding the effect of a possible interaction with ultralight pseudoscalar particles with a mass ∼ 10^(−21) eV as the constituents of dark matter. We compute the cross section and describe the propagation of the neutrino flux using transport equations for each mass eigenstate. This allows us to obtain the neutrino fluxes of the different flavors to be observed at the Earth with neutrino telescopes. In particular, using the updated data of the astrophysical neutrino events detected by IceCube, it is possible to restrict the range of allowed couplings between neutrinos and ultralight scalar particles by avoiding the values that would yield a flavor composition inconsistent with observations.