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. © 2014 American Physical Society.

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

LANCERI, LIVIO;VITALE, LORENZO;
2014

Abstract

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. © 2014 American Physical Society.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11368/2836269
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 3
  • ???jsp.display-item.citation.isi??? 4
social impact