Eur. Phys. J. C (2017) 77: 524
https://doi.org/10.1140/epjc/s10052-017-5083-3

Letter

Perturbative evolution: a different approach at small x

¹ School of Physics and Astromony, University of Manchester, Manchester, UK
² DAMTP, Cambridge University, Cambridge, UK

^* e-mail: pvl@damtp.cam.ac.uk

Received: 2 June 2017
Accepted: 14 July 2017
Published online: 7 August 2017

Abstract

We propose an approach to DGLAP evolution at small x that circumvents the usual problem that a perturbation expansion is not valid there. The data for the charm structure function are important to motivate the method, and it describes them much more successfully than the conventional approach.