Study on the νn→μ-p and ν-barp→μ+n quasi-elastic reactions at the SKAT bubble chamber at 3-20 GeV

Total and differential cross sections of the quasi-elastic reactions vn → μ-p and v-barp → μ+n at neutrino energies of 3-20 GeV have been measured. The results have been obtained making use of the SKAT freon bubble chamber exposed in the neutrino beam of the Serpukhov accelerator. Comparison with the V-A theory is made. The axial mass values calculated in the dipole approximation of the form-factors for the v and v-bar data are respectively MA=0.96±0.04±0.14 and 0.72±0.11±0.20 GeV