INVESTIGADORES
MOLLERACH Maria Silvia
artículos
Título:
PeV neutrinos from the propagation of ultra-high energy cosmic rays
Autor/es:
ROULET, ESTEBAN; SIGL, GUENTER; VAN VLIET, ARJEN; MOLLERACH, SILVIA
Revista:
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Editorial:
IOP PUBLISHING LTD
Referencias:
Lugar: Londres; Año: 2013 vol. 1 p. 1 - 12
ISSN:
1475-7516
Resumen:
We discuss the possibility that the PeV neutrinos recently observed by
IceCube are produced by the interactions of extragalactic cosmic rays
during their propagation through the radiation backgrounds. We show that
the fluxes resulting from the decays of neutrons produced in the
interactions of cosmic ray protons with the CMB background are
suppressed (Eν2dΦν/dE <
10‑10 GeV/cm2 s sr), with those resulting
from the decays of pions produced in the interactions with the
UV/optical/IR backgrounds being the dominant ones at PeV energies. The
anti-neutrino fluxes produced by the decay of neutrons resulting from
the photodisintegration of heavy nuclei with CMB photons are also shown
to be quite suppressed
(Eν2dΦν/dE <
10‑11 GeV/cm2 s sr), while those produced by
photo-pion processes with UV/optical/IR backgrounds may be larger,
although they are not expected to be above those achievable in the pure
proton case. Scenarios with mixed composition and low cutoff rigidities
can lead to PeV neutrino fluxes enhanced with respect to those in the
pure Fe scenarios. We also discuss the possible impact of the Glashow
resonance for the detection of these scenarios, showing that it plays a
moderate role.