Two photons decay of the glueball and scalar isoscalar mesons in a scaled NJL model

Details Two photons decay of the glueball and scalar isoscalar mesons in a scaled NJL model Two photons decay of the glueball and scalar isoscalar mesons in a scaled NJL model

1997-12-08

arxiv.org/abs/nucl-th/9712029v1

Nucl.Phys. A636 (1998) 113-126

Physics

Nuclear Physics

Nuclear Theory

Latex file, 16 pages, 7 figures, uses psfig

Scientific paper

10.1016/S0375-9474(98)00201-2

We use a modified version of the Nambu--Jona-Lasinio model which implements
the QCD trace anomaly to calculate the two photons decay width of the glueball
(f_0(1500)) and of the two scalar mesons (f_0(1370), f_{J=0}(1710)) to which it
is mixed. We investigate the effect of this mixing over the coupling constants
of the f_0 states to the quarks.

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