Phenomenology of Dilaton in a Chiral Linear Sigma Model with Vector Mesons

2012/08/27 by Stanislaus Janowski, Janowski, Stanislaus
Physics and Astronomy · #Black Holes and Theoretical Physics #Physics of Superconductivity and Magnetism #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.48550/arxiv.1208.5397

Prepared for the proceedings of Excited QCD 2012, Peniche/Portugal, 6.-12. May 2012. 6 pages, 2 Tables

arxiv created 2012/08/27 · arxiv updated 2012/08/28

Abstract

In the framework of the U(2)_R× U(2)_L symmetric linear sigma model with (axial)vector mesons generalized by including a dilaton field we study the phenomenology of the scalar-isoscalar resonances below 2 GeV. It turns out that, in our favoured scenario, the resonance f₀(1370) is predominantly a qq state and f₀(1500) is predominantly a glueball state. Additionally we are able to calculate the value of the gluon condensate, which is in agreement with lattice QCD results.

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