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Evidence for the baryonic decay B ̄ 0 →d0 Λ Λ ̄ EVIDENCE for the BARYONIC DECAY ... J.P. LEES et al.

  • J. P. Lees
  • , V. Poireau
  • , V. Tisserand
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  • , T. Schroeder
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  • , A. Khan
  • , V. E. Blinov
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Résultats de recherche: Contribution à un journalArticleRevue par des pairs

8 Citations (Scopus)

Résumé

Evidence is presented for the baryonic B meson decay B̄0→ D0ΛΛ̄ based on a data sample of 471×106 BB̄ pairs collected with the BABAR detector at the PEP-II asymmetric e+e- collider located at the SLAC National Accelerator Laboratory. The branching fraction is determined to be B(B̄0→D0ΛΛ̄)=(9.8-2.6+2. 9±1.9)×10-6, corresponding to a significance of 3.4 standard deviations including additive systematic uncertainties. A search for the related baryonic B meson decay B̄0→D0Σ0Λ̄ with Σ0→Λγ is performed and an upper limit B(B̄0→D0Σ0Λ̄+B̄0→D0ΛΣ̄0) <3.1×10-5 is determined at 90% confidence level.

langue originaleAnglais
Numéro d'article112002
journalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume89
Numéro de publication11
Les DOIs
étatPublié - 6 juin 2014

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