Top 2016

Measurements of CP violation asymmetries in B­hadron decays using top quark events collected by the ATLAS detector in pp collisions at 8 TeV

20 Sept 2016, 19:10

10m

Main Auditorium EVROPA (NH hotel, Olomouc)

Young Scientist Forum Young Scientists Forum

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.

Presentation materials

JKempster_TOP2016_YSFTalk_20092016.pdf