2019/02/22 by Emmanuel Ortiz-Pacheco, R. Bijker, Roelof Bijker +2 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · doi:10.1088/1361-6471/ab096d
openalex created_date 2018/09/07 · openalex publication_date 2019/02/22 · openalex updated_date 2026/07/30
Abstract We develop an extension of the usual three-flavor quark model to four flavors ( u , d , s and c ), and discuss the classification of pentaquark states with hidden charm ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mi mathvariant="italic">qqqc</mml:mi> <mml:mover accent="true"> <mml:mrow> <mml:mi>c</mml:mi> </mml:mrow> <mml:mrow> <mml:mo>¯</mml:mo> </mml:mrow> </mml:mover> </mml:math> ). We fit our model to the known baryon spectrum and we predict the double and triple charm baryons, finding good agreement with the most recent lattice QCD calculations. We compute the ground state of hidden charm pentaquarks and their associated magnetic moments and electromagnetic couplings, of interest to pentaquark photoproduction experiments.