Scalar Mesons in Lattice QCD

Details Scalar Mesons in Lattice QCD Scalar Mesons in Lattice QCD

2003-10-28

arxiv.org/abs/hep-ph/0310312v2

Phys.Rev. D70 (2004) 034504

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 figures; corrected typos

Scientific paper

We explore whether "f$_{0}$(600) or $\sigma$" 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 $\sigma$ pole
exists owing to the disconnected diagram of the meson propagator. A discussion
is given on the physical content of the $\sigma$.

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