1997/11/27 by Stéphan Narison, Stephan narison, narison, Stephan
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-lat #hep-ph #nucl-th
paper · pdf · doi:10.48550/arxiv.hep-ph/9711495
talk given at the HEP 97, Jerusalem (1997)
arxiv created 1997/11/27 · arxiv updated 2009/11/30
I briefly review the estimate of the gluonia masses, decay and mixings in QCD with massless quarks from QCD spectral sum rules and some low-energy theorems. The data in the 0++ channel can be explained with some maximal gluonium-quarkonium mixing schemes, which then suggest a large violation of the OZI rule, similar to the case of the η' in the U(1)A sector.