Optimisation of variables for studying dilepton transverse momentum distributions at hadron colliders A. Banfi, S. Redford, M. Vesterinen, P. Waller and T.R. Wyatt Eur. Phys. J. C, 71 3 (2011) 1600 Published online: 10 March 2011 DOI: 10.1140/epjc/s10052-011-1600-y