Axial Vector Current and Induced Pseudoscalar Coupling Constant on ${\mu }^{-}p\to n{\nu }_{\mu }\gamma$ reaction

Il-Tong Cheon, Myung KI Cheoun

The recent TRIUMF experiment for ${\mu }^{-}p\to n{\nu }_{\mu }\gamma$ gave a surprising result that the induced pseudoscalar coupling constant $g_P$ was larger than the value obtained from $μ^- p \…