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Mixing of Scalar Glueball and Scalar Quarkonia
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abstract
The isosinglet scalar mesons $f_0(1710)$, $f_0(1500)$, $f_0(1370)$ 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 $q\bar q$ annihilation, and the other is the scalar glueball mass at 1710 MeV in the quenched approximation. In the SU(3) symmetry limit, $f_0(1500)$ becomes a pure SU(3) octet and is degenerate with $a_0(1450)$, while $f_0(1370)$ is mainly an SU(3) singlet with a slight mixing with the scalar glueball which is the primary component of $f_0(1710)$. These features remain essentially unchanged even when SU(3) breaking is taken into account. The observed enhancement of $\omega f_0(1710)$ production over $\phi f_0(1710)$ in hadronic $J/\psi$ decays and the copious $f_0(1710)$ production in radiative $J/\psi$ decays lend further support to the prominent glueball nature of $f_0(1710)$.
Forward citations
Cited by 1 Pith paper
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Revisiting the $\Lambda_c^+ \to n\pi^+\eta$ decay in light of the BESIII measurement
The measured π+η mass spectrum of Λc+ → n π+ η is best reproduced by chiral-unitary models that include the N(1440) nucleon excitation; the a2(1320) tensor meson does not improve the fit.
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