Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Gülmez, E., Kaya, M., Kaya, O., Yetkin, E.A., Yetkin, T., et.al., 'Measurement of Top Quark Polarisation in t-channel Single Top Quark Production', Journal of High Energy Physics, 4, 2016.