Identification of the glueballs and the scalar meson nonet of lowest mass

Nov, 1998
65 pages
Published in:
  • Eur.Phys.J.C 9 (1999) 283-312
e-Print:
Report number:
  • BUTP-98-27,
  • MPI-PHT-98-89

Citations per year

19982005201220192024051015202530
Abstract: (arXiv)
We discuss the theoretical expectations and phenomenological evidence for the lightest glueballs and the members of the meson nonet with quantum numbers J^PC=0^{++}. We reconsider the recent evidence for candidate states with masses below ~1700 MeV, but include also the results from earlier phase-shift analyses. Arguments are presented to classify the scalars f_0(980) and f_0(1500) as members of the 0^{++} nonet, with a mixing rather similar to that of the pseudoscalars eta' and eta. The S-wave states called f_0(400-1200) and f_0(1370) are considered as different signals from a single broad resonance, which we take to be the lowest-lying 0^{++} glueball. This state together with eta(1440) and f_J(1710) with spin J=2 form the basic triplet of binary gluonic bound states. We argue that these hypotheses are consistent with what can be expected theoretically.
  • meson: hadron spectroscopy
  • scalar meson: multiplet
  • glueball
  • quantum number
  • partial wave analysis
  • f0(980)
  • f0(1500)
  • mixing angle
  • quantum chromodynamics: sum rule
  • lattice field theory