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

M. Jaminon·B. Van den Bossche
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Abstract

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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M. Jaminon, B. Van den Bossche. 1997-12-08. Two photons decay of the glueball and scalar isoscalar mesons in a scaled NJL model. https://doi.org/10.1016/s0375-9474(98)00201-2

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