$η_c$ - glueball Mixing and Resonance X(1835)

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/177907The mixing of $η_c$ and the lowest mass pseudoscalar glueball is estimated within the framework of the instanton liquid model. It is demonstrated that the mixing is large and may explain the difference between the observed mass of the glueball candidate X(1835) and the theoretical prediction of QCD sum rule analysis.5 pages, 1 figure, LatexHigh Energy Physics - PhenomenologyHigh Energy Physics - ExperimentNuclear ExperimentNuclear Theory$η_c$ - glueball Mixing and Resonance X(1835)text