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Two photon decay of the glueball and scalar isosclar mesons in a scaled NJL model
Jaminon, Martine; Van den Bossche, Bruno
1998In Nuclear Physics A, 636, p. 113-126
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Abstract :
[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.
Disciplines :
Physics
Author, co-author :
Jaminon, Martine ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Van den Bossche, Bruno
Language :
English
Title :
Two photon decay of the glueball and scalar isosclar mesons in a scaled NJL model
Publication date :
1998
Journal title :
Nuclear Physics A
ISSN :
0375-9474
eISSN :
1873-1554
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
636
Pages :
113-126
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 23 September 2009

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