Hadronic interactions of theJ∕ψand Adler’s theorem

2004/08/03 by A. Bourque, C. Gale, Charles Gale +2 · 15 citations
Chemistry · Physics and Astronomy · #Chemistry #Decoupling (probability) #Dissociation (chemistry) #Hadron #High-Energy Particle Collisions Research #Lagrangian #Mathematical physics #Particle physics #Particle physics theoretical and experimental studies #Physical chemistry #Physics #Pion #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th

paper · pdf · doi:10.1103/physrevc.70.055203

published in Physical Review C 70(5) (American Institute of Physics) · 14 pages, 4 figures

arxiv created 2004/08/03 · openalex publication_date 2004/11/22 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Effective Lagrangian models of charmonium have recently been used to estimate dissociation cross sections with light hadrons. Detailed study of the symmetry properties reveals possible shortcomings relative to chiral symmetry. We therefore propose a new Lagrangian and point out distinguishing features amongst the different approaches. Moreover, we test the models against Adler's theorem, which requires, in the appropriate limit, the decoupling of pions from the theory for the normal parity sector. Using the newly proposed Lagrangian, which exhibits SU_L(N_f)\ifmmode×\else\texttimes\fiSU_R(N_f) symmetry and complies with Adler's theorem, we find dissociation cross sections with pions that are reduced in an energy-dependent way, with respect to cases where the theorem is not fulfilled.

Citations

• J/ψabsorption byπandρmesons in a meson exchange model with anomalous parity interactions
• Global aspects of current algebra
• Effective Lagrangians and Field Algebras with Chiral Symmetry
• Hadronic interactions of theJ/ψ
• Evidence for deconfinement of quarks and gluons from the J/ψ suppression pattern measured in Pb-Pb collisions at the CERN-SPS
• On the sum rule approach to quarkonium-hadron interactions
• Nonlinear Realizations of Chiral Symmetry