CU-TP-1192, Edinburgh 2010/1 RBRC–827, SHEP 0928 C. Albertus $^{∗}$, 1 Y. Aoki, 2 P. A. Boyle, 3 N. H. Christ, 4 T. T. Dumitrescu $^{†}$, 4 J. M. Flynn, 1 T. Ishikawa $^{‡}$, 2 T. Izubuchi, 2, 5 O. Loktik, 4 C. T. Sachrajda, 1 A. Soni, 5 R. S. Van de Water, 5 J. Wennekers $^{§}$, 3 and O. Witzel 5 $^{4}$Physics Department, Columbia University, New York, NY 10027, USA $^{5}$Physics Department, Brookhaven National Laboratory, Upton, NY 11973, USA (Dated: October 29, 2018) In memory of Jan Wennekers. ∗ Present address: Departamento de F´ısica Fundamental, Facultad de Ciencias, Universidad de Salamanca, Plaza de la Merced s/n, 37008, Salamanca, Spain † Present address: Department of Physics, Princeton University, Princeton, NJ 08544, USA ‡ Present address: Physics Department, University of Connecticut, Storrs, CT 06269-3046, USA § Also: Instituto de F´ısica Corpuscular, CSIC-Universidad de Valencia, P.O. Box 22085, 46071 Valencia, Spain Neutral B -meson mixing from unquenched lattice QCD with domain-wall light quarks and static b -quarks $^{1}$School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, UK $^{2}$RIKEN-BNL Research Center, Brookhaven National Laboratory, Upton, NY 11973, USA $^{3}$SUPA, School of Physics, The University of Edinburgh, Edinburgh EH9 3JZ, UK arXiv:1001.2023v1 [hep-lat] 12 Jan 2010 (RBC and UKQCD Collaborations) 1