Influence of Vector Mesons on the f0(600) Decay Width in a Linear Sigma Model with Global Chiral Invariance

2009/11/20 by Denis Parganlija, Parganlija, Denis, Francesco Giacosa +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th) #hep-ph #nucl-th

paper · pdf · doi:10.48550/arxiv.0911.3996

Presented by D. Parganlija at Excited QCD, 8-14 February 2009, in Zakopane (Poland); 6 pages, 2 figures

arxiv created 2009/11/20 · arxiv updated 2009/12/08

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.

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