Neutrino photon reactions in astrophysics and cosmology

Sep, 1997
4 pages
Published in:
  • Phys.Rev.Lett. 80 (1998) 900-903
e-Print:
Report number:
  • BA-97-32

Citations per year

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Abstract:
At energies above the threshold for WW production the process νγlW+\nu \gamma \to l W^+ is competive with νν\nu \nu scattering at the same center of mass energies. In a cosmological setting, absorption of ultra high energy neutrinos by the microwave photon background is comparable to absorption by the neutrino background. In passing through matter, the process νlW+\nu \to l W^+ will occur in the coulomb field of nuclei. For iron, the interaction rate per nucleon is roughly 20% of the charge current cross-section. The related process, \anti\nu_e e^- \to \gamma W^- dominates \anti\nu_e e^- scattering for about a decade in energy above the resonance for WW production.
  • astrophysics
  • scattering: neutrino photon
  • W: photoproduction
  • cross section: energy dependence
  • antineutrino electron: interaction
  • neutrino nucleus: interaction
  • current
  • numerical calculations
  • neutrino photon --> W+ lepton
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