Lower Energy Consequences of an Anomalous High-Energy Neutrino Cross-Section

Details Lower Energy Consequences of an Anomalous High-Energy Neutrino Cross-Section Lower Energy Consequences of an Anomalous High-Energy Neutrino Cross-Section

1998-10-29

arxiv.org/abs/hep-ph/9810533v1

Phys.Rev. D59 (1999) 113005

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, LaTex

Scientific paper

10.1103/PhysRevD.59.113005

A new strong-interaction has been postulated for neutrinos above ~10^{19} eV to explain the production of highest-energy cosmic ray events. We derive a dispersion relation relating the hypothesized high-energy cross-section to the lower-energy neutrino-nucleon elastic amplitude. Remarkably, we find that the real forward amplitude becomes anomalous seven orders of magnitude lower in energy than does the total cross-section. We discuss possible measurable consequences of this early onset of new neutrino physics, and conclude that a significantly enhanced elastic \nu-N scattering rate may occur for the neutrino beams available at Fermilab and CERN.

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