Decay of axial vector mesons into VP and P

We propose a formalism for the decay of the SU (3) nonets of the axial vector mesons of J P C = 1 +− , 1 ++ into a vector meson and a pseudoscalar which is based on a tensor formulation of the vector and axial vector fields. The formulation leads to a good reproduction of the different decay branching ratios and assuming vector meson dominance (VMD) it also leads to good results for the radiative decay of the a 1 into pion and photon, and in agreement with the structure proposed in the chiral formulation of radiative decay of axial vector mesons. The two SU (3) parameters and the mixing angle of K 1A and K 1B needed to give the physical K 1 (1270) and K 1 (1400) resonances are determined.