Model-independent measurement of the top quark polarisation Aguilar Saavedra, Juan Antonio Herrero-Hahn, Raquel Top quark Polarisation We introduce a new asymmetry in the decay t -> W b -> l nu b, which is shown to be directly proportional to the polarisation of the top quark along a chosen axis, times a sum of W helicity fractions. The latter have already been precisely measured at the Tevatron and the Large Hadron Collider. Therefore, this new asymmetry can be used to obtain a model-independent measurement of the polarisation of top quarks produced in any process at hadron or lepton colliders. 2014-02-17T13:05:59Z 2014-02-17T13:05:59Z 2013 info:eu-repo/semantics/preprint Aguilar-Saavedra, J.A.; Herrero-Hahn, R.V. Model-independent measurement of the top quark polarisation. Physics Letters B, 718(3): 983-987 (2013). [http://hdl.handle.net/10481/30475] 0370-2693 doi: 10.1016/j.physletb.2012.11.031 arXiv:1208.6006v2 http://hdl.handle.net/10481/30475 eng http://creativecommons.org/licenses/by-nc-nd/3.0/ info:eu-repo/semantics/openAccess Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License Elsevier