Two photons decay of the glueball and scalar isoscalar mesons in a scaled NJL model
نویسندگان
چکیده
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 (f0(1500)) and of the two scalar mesons (f0(1370), fJ=0(1710)) to which it is mixed. We investigate the effect of this mixing over the coupling constants of the f0 states to the quarks.
منابع مشابه
Scalar Mesons in a Chiral Quark Model with Glueball
Ground-state scalar isoscalar mesons and a scalar glueball are described in a U(3)×U(3) chiral quark model of the Nambu–Jona-Lasinio (NJL) type with ’t Hooft interaction. The latter interaction produces singlet-octet mixing in the scalar and pseudoscalar sectors. The glueball is introduced into the effective meson Lagrangian as a dilaton on the base of scale invariance. The mixing of the glueba...
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