Measuring unification Claire Adam, Jean-Loic Kneur, Rémi Lafaye, Tilman Plehn, Michael Rauch and Dirk Zerwas Eur. Phys. J. C, 71 1 (2011) 1520 Published online: 08 January 2011 DOI: 10.1140/epjc/s10052-010-1520-2