Xu-Hao Yuan, Liang Tang
Abstract
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Contributions of fermions to the mass of the scalar glueball 0 ++ are calculated at two-loop level in the framework of QCD sum rules. It slightly changes the coefficients in the operator product expansion (OPE) and shifts the mass of glueball to 1.72 ± 0.07 GeV.
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Contributions of fermions to the mass of the scalar glueball 0 ++ are calculated at two-loop level in the framework of QCD sum rules. It slightly changes the coefficients in the operator product expansion (OPE) and shifts the mass of glueball to 1.72 ± 0.07 GeV.
Key concepts: Glueball, Operator product expansion, Physics, Sum rule in quantum mechanics, Fermion, Scalar (mathematics), Quantum chromodynamics, Particle physics