Analysis of the [\bf 56,4⁺] Baryon Masses in the 1/N_c Expansion

2005/01/14 by N. Matagne, Nicolas Matagne, Matagne, N.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0501123

5 pages, 3 figures, Presented at the JJC2004 -Journees Jeunes Chercheurs-, ile de Berder, France, 28 November-3 December 2004. One reference added

openalex publication_date 2005/01/14 · arxiv created 2005/01/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We use the 1/N_c expansion of QCD to analyze the spectrum of positive parity resonances with strangeness S = 0, -1, -2 and -3 in the 2--3 GeV mass region, supposed to belong to the [56,4⁺] multiplet. We find that the spin-spin term brings the dominant contribution and that the spin-orbit term is entirely negligible in the hyperfine interaction, in agreement with constituent quark model results. More data are strongly desirable, especially in the strange sector in order to fully exploit the power of this approach.

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