1995/03/21 by M. L. Nekrasov, Nekrasov, M. L.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · doi:10.48550/arxiv.hep-ph/9503405
openalex publication_date 1995/03/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
An effective chiral lagrangian of order p2, describing the interaction of light pseudoscalar (PS) mesons with η'-meson and PS-glueball, has been determined taking into consideration the renorm-group requirements imposed by QCD renormalization. It is shown that the interpolating fields for the lowest singlet quarkic and gluonic states, η0 and ηG, may be involved into the effective theory to be renorm-invariant objects not mixing due to QCD renormalization. It is established that the potential describing the ``mass'' term of the lagrangian does not depend on η0. The dependence on ηG is permitted only when there is not direct interaction between η0 and ηG out of the ``mass'' term without the octet fields contribution. The peculiarities distinguishing the glueball from excitation over η0 have been considered.