Axial Mass in Quasielastic Antineutrino-Nucleon Scattering Accompanied by Strange-Hyperon Production

Reactions of quasielastic Lambda-, Sigma(-)-, and Sigma(0)-hyperon production in antineutrino-nucleon interactions are studied. An axial-mass (M-A) value that agrees with a fit to all accelerator data on exclusive and inclusive nu N and nu N reactions was extracted from a global statistical analysis of experimental data on differential and total cross sections for Delta Y = 0 and 1 quasielastic reactions of neutrino and antineutrino scattering on various nuclear targets.