Propagation of astrophysical neutrinos in a background of ultra-light scalar field dark matter

REYNOSO, M. M; SAMPAYO, O. A.

Madrid

Workshop; Invisibles 15; 2015

Ultra-light scalar particles (m_phi sim 10^{-23} eV) have been proposed as plausible dark matter constituents. If these particles were coupled to neutrinos, the propagation of high energy neutrinos in the extragalactic and galactic medium can be affected, as has been pointed out earlier. We make a detailed calculation by solving transport equations for each neutrino mass eigenstate and we obtain the fluxes of the different neutrino flavors on Earth in the cases of point sources and diffuse neutrino fluxes. The results on flavor ratio and directionalty of the neutrino events are to be compared with present and future data from neutrino telescopes.