EPS-HEP 2017

5-12 July 2017
Venice, Italy
Europe/Zurich timezone
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Anomalous couplings in single top and searches for rare top quark couplings with the ATLAS detector

7 Jul 2017, 18:15
15m
Room Volpi (Palazzo del Casinò)

Room Volpi

Palazzo del Casinò

Parallel Talk Top and Electroweak Physics

Speaker

Susana Cabrera Urban (Univ. of Valencia and CSIC (ES))

Description

The top quark is the heaviest known fundamental particle and probing its couplings with the other fundamental particle may open a window to physics beyond the Standard Model. Single top-quark production provides a unique window to study the coupling between the top quark, the W boson and the b quark, since it involves the Wtb vertex in both production and decay. Measurements of angular correlations in single top quark events in the t-channel exchange of a W boson are presented based on the 8 TeV ATLAS dataset. Differential cross-sections are measured as a function of angular variables that are sensitive to anomalous contributions to the Wtb vertex and the top quark polarization. Searches for flavour-changing neutral current top-quark interactions are also discussed based on the 8 TeV and 13 TeV ATLAS dataset. Searches for rare top quark decays to Higgs and Z bosons are presented in top quark production, and searches for rare top quark interactions with gluons and Z bosons are presented in single top quark production.

Experimental Collaboration ATLAS