Search for single top-quark production via flavour changing neutral currents at 8 TeV with the ATLAS detector

Understand

A search for single top-quark production via flavour-changing neutral current processes from gluon plus up- or charm-quark initial states in proton-proton collisions at the LHC is presented.

• Data collected with the ATLAS detector in 2012 at a centre-of-mass energy of 8 TeV and corresponding to an integrated luminosity of 20.3 fb$^{-1}$ are used.
• Candidate events for a top quark decaying into a lepton, a neutrino and a jet are selected and classified into signal- and background-like candidates using a neural network.
• No signal is observed and an upper limit on the production cross-section multiplied by the $t \rightarrow \ell\nu b$ branching fraction is set.