Top B Physics at the LHC

Oram Gedalia, Gino Isidori, Fabio Maltoni, Gilad Perez, Michele Selvaggi, Yotam Soreq

Research output: Contribution to journalArticlepeer-review

Abstract

In top-pair events where at least one of the tops decays semileptonically, the identification of the lepton charge allows us to tag not only the top quark charge but also that of the subsequent b quark. In cases where the b also decays semileptonically, the charge of the two leptons can be used to probe CP violation in heavy flavor mixing and decays. This strategy to measure CP violation is independent of those adopted so far in experiments, and can already constrain non standard model sources of CP violation with current and near future LHC data. To demonstrate the potential of this method we construct two CP asymmetries based on same-sign and opposite-sign leptons and estimate their sensitivities. This proposal opens a new window for doing precision measurements of CP violation in b and c quark physics via high p(T) processes at ATLAS and CMS.
Original languageEnglish
Article number232002
Number of pages5
JournalPhysical review letters
Volume110
Issue number23
DOIs
StatePublished - 5 Jun 2013

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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