Stathes Paganis et al.KAI-FENG CHEN et al.PAO-TI CHANG et al.WEI-SHU HOU et al.2020-07-072020-07-072020https://scholars.lib.ntu.edu.tw/handle/123456789/509363Measurement of top quark pair production in association with a Z boson in proton-proton collisions at $\sqrts=$ 13 TeVjournal article10.1007/JHEP03(2020)056