Study of CP asymmetries in charmless hadronic B decays: Toward a measurement of α

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Abstract

We present preliminary measurements of time-dependent CP asymmetries in neutral B meson decays to π+ π- and π+ π- π0 final states, where the latter is measured in the region of the Dalitz plane dominated by the ρ resonance. We also present preliminary measurements of the branching fraction for the decay B + → π+ π0 and an improved upper limit for B0 → π0 π0, both of which are needed to extract the CP parameter α from the time-dependent CP asymmetry in the π+ π- channel. These results are obtained from a data sample of approximately 88 million Υ(4S) → BB̄ decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC.

Original languageEnglish (US)
Pages (from-to)516-520
Number of pages5
JournalNuclear Physics B - Proceedings Supplements
Volume117
Issue numberSUPPL. 1
DOIs
StatePublished - Jan 1 2003

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics

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