2001/11/29 by B. Golli, Golli, B., P. Alberto +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/0111399
4 pages, 2 Postscript figures, plain LaTeX, talk presented at the Mini-Workshop on ``Few body problems in hadronic and atomic physics'', Bled, Slovenia, 7-14 July 2001
arxiv created 2001/11/29 · openalex publication_date 2001/11/29 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study the contribution of glueball and sigma-meson degrees of freedom to nucleon excited states in the framework of a chiral version of the chromodielectric model. We have found that these degrees of freedom considerably lower the energy of the Roper and may substantially weaken the electroexcitation amplitudes for the N(1440) and in particular for the N(1710).