Collinear matching for Sivers function at next-to-leading order

Abstract

Abstract We evaluate the light-cone operator product expansion for unpolarized transverse momentum dependent (TMD) operator in the background-field technique up twist-3 inclusively. The next-to-leading order (NLO) matching coefficient for the Sivers function is derived. The method, as well as many details of the calculation are presented.

Keywords

• NLO Computations
• Deep Inelastic Scattering (Phenomenology)