Baryon Exotics in the Quark Model, the Skyrme Model, and QCD

2004/01/26 by Elizabeth Jenkins, Aneesh V. Manohar · 32 citations
Physics and Astronomy · #Baryon #Baryon number #Exotic hadron #High-Energy Particle Collisions Research #Moment of inertia #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Pentaquark #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Quantum number #Quark #Quark model #Quarkonium #hep-ph

paper · pdf · doi:10.1103/physrevlett.93.022001

published in Physical Review Letters 93(2), 022001 (American Physical Society)

arxiv created 2004/01/26 · openalex publication_date 2004/07/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We derive the quantum numbers of baryon exotics in the quark model and the Skyrme model and show that they agree for arbitrary colors and flavors. We define exoticness E, which can be used to classify the states. The exotic baryons include the recently discovered qqqqq pentaquarks (E=1), as well as exotic baryons with additional qq pairs (E>/=1). The mass formula for nonexotic and exotic baryons is given as an expansion in 1/N(c) and allows one to relate the moment of inertia of the Skyrme soliton to the mass of a constituent quark.

Citations

• Is Θ+(1540) a kaon–skyrmion resonance?
• Baryon hyperfine mass splittings large N QCD
• Diquarks and Exotic Spectroscopy
• Hyperfine mass splittings of baryons containing a heavy quark in large N QCD
• A planar diagram theory for strong interactions
• Spin-flavor structure of largeNcbaryons
• Light quark spin-flavor symmetry for baryons containing a heavy quark in large N QCD

Cited by

• Chiral soliton model for arbitrary colors and flavors
• Bosonic operator methods for the quark model
• Pentaquark Θ+(1540) production in γN→KK¯N reactions