Influence of Vector Mesons on the f0(600) Decay Width in a Linear Sigma Model with Global Chiral Invariance
arXiv:0911.3996
Abstract
We consider a globally invariant chiral Lagrangian that contains vector and axial-vector mesons. We compute the f0(600) decay width into two pions and pion-pion scattering lengths and compare with the corresponding results in which the (axial-)vector degrees of freedom decouple. We show that the role of vector mesons has a great impact on these quantities.
Presented by D. Parganlija at Excited QCD, 8-14 February 2009, in Zakopane (Poland); 6 pages, 2 figures
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