Dear all,
This is to inform you of the following seminar.
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*Zoom Codes* for KIAS HEP zoom seminars :
* make sure you are mute, unless you are speaking
* can ask questions any time with unmuting
* video preferred when asking a question and discuss
* please use your first and last name on Zoom.
Nickname or abbreviation is not allowed
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*Date: Tuesday, April, 6th, 17:00 - 18:00 AM (KST) Tuesday, April,
6th, 10AM (CEST)*
Place: online (zoom)
Join Zoom Meeting
https://us02web.zoom.us/j/89199363790?pwd=Nlg0b1EzYmV5WDVxZUkxMXQycjdEZz09
Meeting ID: 891 9936 3790
Passcode: 255542
*Title*: The Present and Future of Four Top Operators
*Speaker*: Prof. Andreas Weiler (Technical University of Munich)
*Abstract*: We study the phenomenology of a strongly-interacting top
quark at future hadron and lepton colliders, showing that the
characteristic four-top contact operators give rise to the most
significant effects. We demonstrate the extraordinary potential of a
100 TeV proton-proton collider to directly test such non-standard
interactions in four-top production, a process that we thoroughly
analyze in the same-sign dilepton and trilepton channels, and explore
in the fully hadronic channel. Furthermore, high-energy
electron-positron colliders, such as CLIC or the ILC, are shown to
exhibit an indirect yet remarkable sensitivity to four-top operators,
since these constitute, via renormalization group evolution, the
leading new-physics deformations in top-quark pair production. We
investigate the impact of our results on the parameter space of
composite Higgs models with a strongly-coupled (right-handed) top
quark, finding that four-top probes provide the best sensitivity on
the compositeness scale at the future energy frontier. In addition, we
investigate mild yet persisting LHC excesses in multilepton plus jets
final states, showing that they can be consistently described in the
effective field theory of such a new-physics scenario.
We are looking forward to seeing you.
Best regards,
Dong Woo Kang
