  We analyze all available experimental data on the $\nu_\mu$ and
$\overline{\nu}_\mu$ total and differential cross sections of charged-current
single pion production through the decay of intermediate nucleon and baryon
resonances measured on hydrogen and deuterium targets in the accelerator
experiments at ANL, BNL, FNAL, and CERN. These data are used to determine the
current "resonance" axial-vector mass of the nucleon and to fine-tune the
nonresonance non-interfering background contribution which described within the
Rein-Sehgal approach. For this analysis, we revise the phenomenological model
and the experimental dataset for the fits, modify the method of likelihood
analysis compared to the previous study. The obtained model parameters coming
in combination with a revised strategy for the normalization of the BW
distributions are slightly different from the values used by default.
