The large Nc baryon–meson It=Jt rule holds for three flavors

2006/03/20 by Richard F. Lebed · 9 citations
Physics and Astronomy · #Amplitude #Baryon #High-Energy Particle Collisions Research #Meson #Nuclear physics #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Scattering #hep-ph

paper · pdf · doi:10.1016/j.physletb.2006.06.014

published in Physics Letters B 639(2), 68-73 (Elsevier BV) · 12 pages, 0 figures, ReVTeX

arxiv created 2006/03/20 · openalex publication_date 2006/06/22 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

It has long been known that nonstrange baryon-meson scattering in the 1/N_c expansion of QCD greatly simplifies when expressed in terms of t-channel exchanges: The leading-order amplitudes satisfy the selection rule I_t = J_t. We show that I_t = J_t, as well as Y_t = 0, also hold for the leading amplitudes when the baryon and/or meson contain strange quarks, and also characterize their 1/N_c corrections, thus opening a new front in the phenomenological study of baryon-meson scattering and baryon resonances.

Citations

• Compatibility of quark and resonant picture excited baryon multiplets in the1/Ncexpansion of QCD
• The Octet Model and its Clebsch-Gordan Coefficients
• Excited baryons in largeNcQCD reexamined: The resonance picture versus single-quark excitations
• New Relations for Excited Baryons in Large-NcQCD
• Phenomenology of the baryon resonance 70-plet at largeNc
• Spin-flavor structure of largeNcbaryons
• Pion photoproduction amplitude relations in the1/Ncexpansion