Reference : Two photon decay of the glueball and scalar isosclar mesons in a scaled NJL model
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/23468
Two photon decay of the glueball and scalar isosclar mesons in a scaled NJL model
English
Jaminon, Martine mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
Van den Bossche, Bruno [ > > ]
1998
Nuclear Physics A
Elsevier Science
636
113-126
Yes (verified by ORBi)
International
0375-9474
Amsterdam
The Netherlands
[en] We use a modified version of the Nambu-Jona-Lasinio (NJL) model which implements the QCD trace anomaly to calculate the two photon 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 the mixing over the coupling constants of the f0 states to the quarks and over the widths. We show that mass and phase space effects are crucial, at least in the NJL model, in determining the relative strength of the 2γ widths.
Researchers
http://hdl.handle.net/2268/23468
10.1016/S0375-9474(98)00201-2

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