%0 Journal Article
%T CP-violating top quark couplings at future linear e+e- colliders
%A Bernreuther, W.
%A Chen, L.
%A Garcia, I.
%A Perello, M.
%A Poeschl, R.
%A Richard, F.
%A Ros, E.
%A Vos, M.
%J European Physical Journal C
%D 2018
%V 78
%N 2
%I Springer
%@ 1434-6044
%G English
%F Bernreuther_etal2018
%O WOS:000426403400001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3503), last updated on Tue, 13 Mar 2018 15:49:40 +0000
%X We study the potential of future lepton colliders to probe violation of the CP symmetry in the top quark sector. In certain extensions of the Standard Model, such as the two-Higgs-doublet model (2HDM), sizeable anomalous top quark dipole moments can arise, which may be revealed by a precise measurement of top quark pair production. We present results from detailed Monte Carlo studies for the ILC at 500 GeV and CLIC at 380 GeV and use parton-level simulations to explore the potential of high-energy operation. We find that precise measurements in e(+)e(-) -> t (t) over bar production with subsequent decay to lepton plus jets final states can provide sufficient sensitivity to detect Higgs-boson-induced CP violation in a viable two-Higgs-doublet model. The potential of a linear e(+)e(-) collider to detect CP-violating electric and weak dipole form factors of the top quark exceeds the prospects of the HL-LHC by over an order of magnitude.
%R 10.1140/epjc/s10052-018-5625-3
%U http://arxiv.org/abs/1710.06737
%U https://doi.org/10.1140/epjc/s10052-018-5625-3
%P 155-21pp