Eur. Phys. J. C (2013) 73: 2356
https://doi.org/10.1140/epjc/s10052-013-2356-3

Regular Article - Theoretical Physics

Polarized semi-inclusive electroweak structure functions at next-to-leading-order

Departamento de Física, FCEyN, Universidad de Buenos Aires, (1428) Pabellón 1 Ciudad Universitaria, Capital Federal, Argentina

^* e-mail: yrotstein@df.uba.ar

Received: 29 October 2012
Revised: 8 February 2013
Published online: 20 March 2013

Abstract

We present a next-to-leading order (NLO) computation of the full set of polarized and unpolarized electroweak semi-inclusive DIS (SIDIS) structure functions, whose knowledge is crucial for a precise extraction of polarized parton distributions. We focus on the phenomenology of the polarized structure functions for the kinematical conditions that could be reached in an Electron-Ion-Collider. We show that the NLO corrections are sizeable, particularly in the small-x range. We test the sensitivity of these structure functions on certain quark distributions and compare it to the situation of inclusive DIS and electromagnetic SIDIS.