Mixing among lowest-lying scalar mesons and scalar glueball
نویسندگان
چکیده
منابع مشابه
The Glueball among the Light Scalar Mesons
The lightest gluonic meson is expected with J = 0, calculations in full QCD point towards a mass of around 1 GeV. The interpretation of the scalar meson spectrum is hindered as some states are rather broad. In a largely modelindependent analysis of ππ → ππ, ππ scattering in the region 600-1800 MeV a unique solution for the isoscalar S-wave is obtained. The resonances f0(980), f0(1500) and the b...
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The isosinglet scalar mesons f0(1710), f0(1500), f0(1370) and their mixing are studied. Two recent lattice results are employed as the starting point; one is the approximate SU(3) symmetry in the scalar sector above 1 GeV for the connected insertion part without qq̄ annihilation, and the other is the scalar glueball mass at 1710 MeV in the quenched approximation. In the SU(3) symmetry limit, f0(...
متن کاملScalar Glueball, Scalar Quarkonia, and their Mixing
The isosinglet scalar mesons f0(1710), f0(1500), f0(1370) and their mixing are studied. We employ two recent lattice results as the starting point; one is the isovector scalar meson a0(1450) which displays an unusual property of being nearly independent of quark mass for quark masses smaller than that of the strange, and the other is the scalar glueball mass at 1710 MeV in the quenched approxim...
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We study the possibility of the scalar charmonium and glueball mixing in e + e − annihilation at √ s = 10.6 GeV. The effects can be used to explain the unexpected large cross section (12 ± 4 fb) and the anomalous angular distribution (α = −1.1 +0.8 −0.6) of the exclusive e + e − → J/ψχ c0 process observed by Belle experiments at KEKB. We calculate the helicity amplitudes for the process e + e −...
متن کامل0 Mixing of scalar glueballs and flavour - singlet scalar mesons
We discuss in detail the extraction of hadronic mixing strengths from lattice studies. We apply this to the mixing of a scalar glueball and a scalar meson in the quenched approximation. We also measure correlations appropriate for flavour-singlet scalar mesons using dynamical quark configurations from UKQCD. This enables us to compare the results from the quenched study of the mixing with the d...
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 2018
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2018.07.012