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Investigation of inclusive CP asymmetries in B0 decays

Research output: Contribution to journalJournal article


<mark>Journal publication date</mark>05/2001
<mark>Journal</mark>The European Physical Journal C (EPJ C) - Particles and Fields
Issue number3
Number of pages13
Pages (from-to)431-443
<mark>Original language</mark>English


A search for CP violating effects in the mixing of neutral B mesons is performed using a sample of 4.1 million hadronic Z decays collected with the ALEPH detector from 1991 to 1995. By studying time-dependent asymmetries in flavour-tagged samples of semileptonic and fully inclusive b-hadron decays, two measurements of the semileptonic asymmetry aCP are extracted. No evidence for CP violation is observed, and the combined value aCP=−0.013±0.026 is obtained.