The next-to-leading order corrections to ρ meson electromagnetic form factors in the k factorization approach

Abstract

In this paper we calculate the next-to-leading-order (NLO) corrections to ρ-meson electromagnetic form factors by employing the k T factorization approach. We find that the NLO correction to F i (Q 2 )(i = LT, T L) is around 30% of the leading-order (LO) contribution in the region Q 2 > 2GeV 2 . The NLO correction to F LL (Q 2 ) is close to 20% of the LO one in the region Q 2 > 3GeV 2 . The NLO radiative corrections to the electric, magnetic, and quadruple form factors F j (Q 2 )(j = 1, 2, 3) are sizeable in magnitude and agree with those from other approaches.