Observation of the DecayB¯0→Λc+p¯

2002/12/31 by N. Gabyshev, H. Kichimi, R. Abe +92 · 4 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.1103/physrevlett.90.121802

published as Phys.Rev.Lett.90:121802,2003 · 11 pages, 2 figures, submitted to Phys. Rev. Lett

arxiv created 2003/02/06 · openalex publication_date 2003/03/26 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

We report the measurement of the charmed baryonic decay B⁰\ensuremath→\ensuremathΛ_c⁺p with a branching fraction of (2.19_\ensuremath-0.49^+0.56\ifmmode±\else\textpm\fi0.32\ifmmode±\else\textpm\fi0.57)\ifmmode×\else\texttimes\fi10^\ensuremath-5 and a statistical significance of 5.8 \ensuremathσ. The errors are statistical, systematic, and the error of the \ensuremathΛ_c⁺\ensuremath→pK^\ensuremath-\ensuremathπ⁺ decay branching fraction. This is the first observation of a two-body baryonic B decay. The analysis is based on 78.2 fb^\ensuremath-1 of data accumulated at the \ensuremathΥ(4S) resonance with the Belle detector at the KEKB asymmetric e⁺e^\ensuremath- collider.

Citations

• Search for charmless two-body baryonic decays ofBmesons
• Measurements of branching fractions and decay amplitudes in B→J/ψK decays

Cited by

• Search for B⁰-> p p-bar, Lambda Lambda-bar and B⁺ -> p Lambda-bar at Belle
• Baryon number violation involving higher generations
• Charmless two-body baryonicBdecays
• Measurements of [script B]([overline B]⁰ → Λ_c⁺[overline p]) and [script B](B^- → Λ_c⁺[overline p]π^-) and studies of Λ_c⁺π^- resonances