Upper limit on the decay Σ(1385)−→Σ−γ and cross section for γΣ−→Λπ−

2004/02/29 by SELEX Collaboration, V. V. Molchanov, G. Alkhazov +98 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.1016/j.physletb.2004.04.006

published as Phys.Lett.B590:161-169,2004 · 13 pages, 3 figures, LaTeX, few clarifications, accepted by Phys.Lett.B

arxiv created 2004/04/02 · openalex publication_date 2004/05/14 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04

Abstract

Coherent Lambda pi- production on Pb of 600 GeV Sigma- hyperons has been studied with the SELEX facility at Fermilab. Using the Primakoff formalism, we set a 90% CL upper limit on the radiative decay width Gamma [Sigma(1385)- --> Sigma- gamma] < 9.5 keV, and estimate the cross section for gamma Sigma- --> Lambda pi- at sqrt(s) = 1.385 GeV to be 56+/-16 mkb.

Citations

• Hyperon radiative decays in the bound state soliton model
• Radiative decays of decuplet hyperons
• Review of particle properties
• Review of Particle Physics

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