2002/06/19 by D. G. Richards, LHPC Collaboration, Richards, D. G. +18
Engineering · Physics and Astronomy · #FOS: Physical sciences #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Superconducting Materials and Applications #nucl-th
paper · pdf · doi:10.48550/arxiv.nucl-th/0206049
4 pages, 3 figures, uses ws-p8-50x6-00.cls. Talk presented at Baryons 2002, Jefferson Laboratory, Newport News, VA, USA, 3rd to 8th March, 2002, proceedings to be published by World Scientific
arxiv created 2002/06/19 · openalex publication_date 2002/06/19 · arxiv updated 2012/08/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
We present a calculation of the lowest-lying baryon masses in the quenched approximation to QCD. The calculations are performed using a non-perturbatively improved clover fermion action, and a splitting is found between the masses of the nucleon and its parity partner. An analysis of the mass of the first radial excitation of the nucleon finds a value considerably larger than that of the parity partner of the nucleon, and thus little evidence for the Roper resonance as a simple three-quark state