2003/11/10 by A. Dzierba, A. R. Dzierba, D. Krop +5 · 3 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.69.051901
published as Phys.Rev. D69 (2004) 051901 · 4 pages, 4 figures
arxiv created 2003/11/10 · openalex publication_date 2004/03/25 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Several recent experiments have reported evidence for a narrow baryon resonance with positive strangeness (\ensuremathΘ+) at a mass of 1.54GeV/c2. Baryons with S=+1 cannot be conventional qqq states and the reports have thus generated much theoretical speculation about the nature of possible S=+1 baryons, including a 5-quark, or pentaquark, interpretation. We show that narrow enhancements in the K+n effective mass spectrum can be generated as kinematic reflections resulting from the decay of mesons, such as the f2(1275), the a2(1320) and the \ensuremathρ3(1690).