Use of W-boson longitudinal-transverse interferencein top quark spin-correlation functions C. A. Nelson, E. G. Barbagiovanni, J. J. Berger, E. K. Pueschel and J. R. Wickman Eur. Phys. J. C, 45 1 (2006) 121-138 Published online: 15 January 2006 DOI: 10.1140/epjc/s2005-02409-4