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Measuring Flavor Ratios of High-Energy Astrophysical Neutrinos
We discuss the prospects for next generation neutrino telescopes, such as IceCube, to measure the flavor ratios of high-energy astrophysical neutrinos. The expected flavor ratios at the sources are… Expand
Stringent constraints on cosmological neutrino-antineutrino asymmetries from synchronized flavor transformation
We assess a mechanism which can transform neutrino-antineutrino asymmetries between flavors in the early universe, and confirm that such transformation is unavoidable in the near bi-maximal framework… Expand
Capture of Leptophilic Dark Matter in Neutron Stars.
Dark matter particles will be captured in neutron stars if they undergo scattering interactions with nucleons or leptons. These collisions transfer the dark matter kinetic energy to the star,… Expand
Model independent bounds on magnetic moments of Majorana neutrinos
Abstract We analyze the implications of neutrino masses for the magnitude of neutrino magnetic moments. By considering electroweak radiative corrections to the neutrino mass, we derive… Expand
Realistic neutron star constraints on bosonic asymmetric dark matter
It has been argued that the existence of old neutron stars excludes the possibility of non-annihilating light bosonic dark matter, such as that arising in asymmetric dark matter scenarios. If… Expand
Do solar neutrinos decay
Despite the fact that the solar neutrino flux is now well understood in the context of matter-affected neutrino mixing, we find that it is not yet possible to set a strong and model-independent bound… Expand
We consider the consequences for the relic neutrino abundance if extra neutrino interactions are allowed, e.g., the coupling of neutrinos to a light (compared to m(nu)) boson. For a wide range of… Expand
Decay of high-energy astrophysical neutrinos.
- J. Beacom, N. Bell, D. Hooper, S. Pakvasa, T. Weiler
- Physics, Medicine
- Physical review letters
- 19 November 2002
Existing limits on the nonradiative decay of one neutrino to another plus a massless particle (e.g., a singlet Majoron) are very weak. The best limits on the lifetime to mass ratio come from solar… Expand
Upper bound on the dark matter total annihilation cross section.
We consider dark matter annihilation into standard model particles and show that the least detectable final states, namely, neutrinos, define an upper bound on the total cross section. Calculating… Expand
Gamma-ray Constraint on galactic positron production by MeV dark matter.
The Galactic positrons, as observed by their annihilation gamma-ray line at 0.511 MeV, are difficult to account for with astrophysical sources. It has been proposed that they are produced instead by… Expand