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Lattice calculations allow us to probe the low-lying, non-perturbative spectrum of QCD using first principles numerical methods. Here we present the low-lying spectrum in the scalar sector with vacuum quantum numbers including, in fully dynamical QCD for the first time, the mixing between glueball, q-qbar, and meson-meson operators.
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This content will become publicly available on February 5, 2026
Update on Glueballs
The recent BESIII announcement of a pseudoscalar glueball candidate makes an update on glueballs from lattice QCD timely. A brief review of how glueballs are studied in lattice QCD is given, and the reasons that glueballs are difficult to study both in lattice QCD with dynamical quarks and in experiments are outlined. Recent glueball studies in lattice QCD are then presented, and an exploratory investigation of the scalar glueball using glueball, meson, and meson-meson operators is summarized, suggesting that no scalar state below 2 GeV or so can be considered to be predominantly a glueball state.
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- Award ID(s):
- 2209167
- PAR ID:
- 10592197
- Publisher / Repository:
- Sissa Medialab
- Date Published:
- Page Range / eLocation ID:
- 004
- Format(s):
- Medium: X
- Location:
- Liverpool, UK
- Sponsoring Org:
- National Science Foundation
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