18–23 Sept 2016
<a href="http://www.nh-olomouc.cz/en/" target="_blank">NH Collections Hotel</a>
Europe/Prague timezone
<a href="https://indico.cern.ch/event/486433/page/8484-photos">Photos</a>

Multilepton signatures from tZq interactions in the SM and top-FCNC

20 Sept 2016, 17:50
10m
Main Auditorium EVROPA (NH hotel, Olomouc)

Main Auditorium EVROPA

NH hotel, Olomouc

Young Scientist Forum Young Scientists Forum

Speaker

Isis Marina Van Parijs (Vrije Universiteit Brussel (BE))

Description

The associated production of a single top quark and a Z boson (tZq) is a rare process predicted by the standard model (SM). Being sensitive to the top-Z and the trilinear gauge couplings, it constitutes an important probe of the SM. While tZq has a moderate cross section, its yield can be enhanced by flavor changing neutral current (FCNC) interactions. The observation of top-FCNCs, which are highly suppressed in the SM, would be a clear sign of new physics. Moreover, by setting limits in a model-independent way on the abundance of these processes, one can exclude many new physics models. In this talk, we discuss multilepton signatures coming from a tZq interaction, either in the context of the SM or arising from an FCNC interaction. Both analyses are battling the same backgrounds and have therefore a similar analysis structure. Using multivariate discriminants in multilepton final states on either 8 TeV or the 13 TeV datasets, an observation or exclusion limit is set.

Primary author

Isis Marina Van Parijs (Vrije Universiteit Brussel (BE))

Co-author

Jeremy Andrea (Institut Pluridisciplinaire Hubert Curien (FR))

Presentation materials