Abstract
Nonlocal effects associated with spin-1 resonance formation in high-energy neutrino scattering are studied in some detail. The breaking of lepton locality through resonance formation introduces the standard Breit-Wigner factor as well as additional momentum dependence through invariant momentum products and form factors at the formation and decay vertices. Exchange of a lepton-baryon resonance in antineutrino scattering leads to the prediction that the asymptotic antineutrino and neutrino cross sections are unequal. The formalism developed is applied to the Yoshiki effect and to a hypothetical lepton-baryon resonance at 10 GeV. Present data indicate the former effect is at best superweak while the latter appears to be no stronger than one-tenth the weak-interaction strength in the energy region ${\ensuremath{\omega}}_{\ensuremath{\nu}}(\mathrm{lab})\ensuremath{\lesssim}5$ GeV.
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