The rho meson timelike electromagnetic form factors in kT factorization approach

Abstract

In this paper, we calculate the [Formula: see text]-meson timelike electromagnetic form factors by employing the [Formula: see text] factorization approach. The theoretical ratio for the moduli of three helicity amplitudes and total cross-section for the annihilation/production process [Formula: see text] are analyzed at [Formula: see text], where the BaBar experiment was done. The results for the moduli of the three helicity amplitudes [Formula: see text] are predicted between [Formula: see text] and [Formula: see text], and the three form factors [Formula: see text] of rho meson are considered.