Drell–Yan as a probe of small x partons at the LHC E.G. Oliveira, A.D. Martin and M.G. Ryskin Eur. Phys. J. C, 72 7 (2012) 2069 Published online: 13 July 2012 DOI: 10.1140/epjc/s10052-012-2069-z