Direct CP-violation in untagged B-meson decays

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13 Scopus citations


Direct CP-violation can exist in untagged, neutral B-meson decays to certain self-conjugate, hadronic final states. It can occur if the resonances which appear therein permit the identification of distinct, CP-conjugate states - in analogy to stereochemistry, we term such states "CP-enantiomers". These states permit the construction of a CP-odd amplitude combination in the untagged decay rate, which is non-zero if direct CP-violation is present. The decay B → π+π-π0, containing the distinct CP-conjugate states ρ+π-, and ρ-π+, provides one such example of a CP-enantiomeric pair. We illustrate the possibilities in various multiparticle final states.

Original languageEnglish
Pages (from-to)261-266
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number3-4
StatePublished - Feb 6 2003

Bibliographical note

Funding Information:
S.G. thanks H.R. Quinn for key discussions and input, L. Dixon and J. Tandean for useful comments, and J.D. Bjorken for a helpful conversation. S.G. acknowledges the SLAC Theory Group for gracious hospitality and is supported by the US Department of Energy under contracts DE-FG02-96ER40989 and DE-AC03-76SF00515.

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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