Study of the strongΣc→Λcπ,Σc*→ΛcπandΞc*→Ξcπdecays in a nonrelativistic quark model

2005/07/31 by C. Albertus, E. Hernández, E. Hernandez +3 · 2 citations
Physics and Astronomy · #Computer science #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th

paper · pdf · doi:10.1103/physrevd.72.094022

published as Phys.Rev. D72 (2005) 094022 · 8 latex pages. Shortened version accepted for publication in Physical Review D

arxiv created 2005/11/03 · openalex publication_date 2005/11/22 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We present results for the strong widths corresponding to the \ensuremathΣ_c\ensuremath→\ensuremathΛ_c\ensuremathπ, \ensuremathΣ_c^*\ensuremath→\ensuremathΛ_c\ensuremathπ and \ensuremathΞ_c^*\ensuremath→\ensuremathΞ_c\ensuremathπ decays. The calculations have been done in a nonrelativistic constituent quark model with wave functions that take advantage of the constraints imposed by heavy quark symmetry. Partial conservation of axial current hypothesis allows us to determine the strong vertices from an analysis of the axial current matrix elements. Our results \ensuremathΓ(\ensuremathΣ_c⁺⁺\ensuremath→\ensuremathΛ_c⁺\ensuremathπ⁺)=2.41\ifmmode±\else\textpm\fi0.07\ifmmode±\else\textpm\fi0.02 MeV, \ensuremathΓ(\ensuremathΣ_c⁺\ensuremath→\ensuremathΛ_c⁺\ensuremathπ⁰)=2.79\ifmmode±\else\textpm\fi0.08\ifmmode±\else\textpm\fi0.02 MeV, \ensuremathΓ(\ensuremathΣ_c⁰\ensuremath→\ensuremathΛ_c⁺\ensuremathπ^\ensuremath-)=2.37\ifmmode±\else\textpm\fi0.07\ifmmode±\else\textpm\fi0.02 MeV, \ensuremathΓ(\ensuremathΣ_c^*++\ensuremath→\ensuremathΛ_c⁺\ensuremathπ⁺)=17.52\ifmmode±\else\textpm\fi0.74\ifmmode±\else\textpm\fi0.12 MeV, \ensuremathΓ(\ensuremathΣ_c^*+\ensuremath→\ensuremathΛ_c⁺\ensuremathπ⁰)=17.31\ifmmode±\else\textpm\fi0.73\ifmmode±\else\textpm\fi0.12 MeV, \ensuremathΓ(\ensuremathΣ_c^*0\ensuremath→\ensuremathΛ_c⁺\ensuremathπ^\ensuremath-)=16.90\ifmmode±\else\textpm\fi0.71\ifmmode±\else\textpm\fi0.12 MeV, \ensuremathΓ(\ensuremathΞ_c^*+\ensuremath→\ensuremathΞ_c⁰\ensuremathπ⁺+\ensuremathΞ_c⁺\ensuremathπ⁰)=3.18\ifmmode±\else\textpm\fi0.10\ifmmode±\else\textpm\fi0.01 MeV, and \ensuremathΓ(\ensuremathΞ_c^*0\ensuremath→\ensuremathΞ_c⁺\ensuremathπ^\ensuremath-+\ensuremathΞ_c⁰\ensuremathπ⁰)=3.03\ifmmode±\else\textpm\fi0.10\ifmmode±\else\textpm\fi0.01 MeV are in good agreement with experimental determinations.

Citations

• Charmed baryons withJ=3/2
• Strong and radiative decays of heavy flavored baryons
• Study of the leptonic decays of pseudoscalarB,Dand vectorB*,D*mesons and of the semileptonicB→DandB→D*decays
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Couplings of heavy hadrons with soft pions from QCD sum rules

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