Scalar Mesons in Lattice QCD

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We explore whether "f$_{0}$(600) or $σ$" exists as a pole in QCD, by a full lattice QCD simulation on the $8^{3} \times 16$ lattice using the plaquette action and Wilson fermions. It is shown that a low-mass $σ$ pole exists owing to the disconnected diagram of the meson propagator. A discussion is given on the physical content of the $σ$.
3 figures; corrected typos

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High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/42979

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-ph/0310312
 http://arxiv.org/abs/hep-ph/0310312
 Phys.Rev. D70 (2004) 034504

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arXiv