Speaker
Jacob Julian Kempster
(Royal Holloway, University of London)
Description
Top pair events provide a source of bbbar pairs, which can be used
to probe CP violation in heavyflavour mixing and decay. In events
where one of the W bosons decays leptonically to an electron or
muon, the charge of the W boson can be used to determine
unambiguously the flavour charge of the accompanying b quark at the
time of its production. In cases where the b also decays
semileptonically to a muon, this sample allows to probe two CP
asymmetries constructed with the charge signs of the W and the soft
muon. The first
measurement of the CP asymmetries in bbar from top pair decays is
hence presented using the data collected with the ATLAS detector
during the 8 TeV run of the LHC.
Author
Jacob Julian Kempster
(Royal Holloway, University of London)
