PoS - Proceedings of Science
Volume 282 - 38th International Conference on High Energy Physics (ICHEP2016) - Poster Session
Test of CP Violation in b ̄ b pairs from top quark decay
J. Kempster* on behalf of the ATLAS collaboration
*corresponding author
Full text: pdf
Pre-published on: February 06, 2017
Published on: April 19, 2017
Abstract
Top pair events provide a source of bb pairs, which can be used to probe CP violation in heavy-flavour 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 charge asymmetries constructed with the charge signs of the W and the soft muon. The first measurement of the charge asymmetries in bb from top pair decays is hence presented using the data collected with the ATLAS detector during the 8 TeV run of the LHC.
DOI: https://doi.org/10.22323/1.282.0892
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