TY  - JOUR
AU  - Bernreuther, W.
AU  - Chen, L.
AU  - Garcia, I.
AU  - Perello, M.
AU  - Poeschl, R.
AU  - Richard, F.
AU  - Ros, E.
AU  - Vos, M.
PY  - 2018
DA  - 2018//
TI  - CP-violating top quark couplings at future linear e+e- colliders
T2  - Eur. Phys. J. C
JO  - European Physical Journal C
SP  - 155
EP  - 21pp
VL  - 78
IS  - 2
PB  - Springer
AB  - 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.
SN  - 1434-6044
UR  - http://arxiv.org/abs/1710.06737
UR  - https://doi.org/10.1140/epjc/s10052-018-5625-3
DO  - 10.1140/epjc/s10052-018-5625-3
LA  - English
N1  - WOS:000426403400001
ID  - Bernreuther_etal2018
ER  -