Article

# Chiral unitary theory of scalar mesons in a finite volume

08/2011;
Source: arXiv

ABSTRACT We develop a scheme for the extraction of the properties of the scalar mesons
\$f_0(600)\$, \$f_0(980)\$, and \$a_0(980)\$ from lattice QCD data. This scheme is
based on a two-channel chiral unitary approach with fully relativistic
propagators in a finite volume. In order to discuss the feasibility of finding
the mass and width of the scalar resonances, we analyze synthetic lattice data
with a fixed error assigned, and show that the framework can be indeed used for
an accurate determination of resonance pole positions in the multi-channel
scattering.

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### Keywords

accurate determination

extraction

finite volume

fixed error

lattice QCD data

resonance pole positions

scalar mesons

scalar resonances

synthetic lattice data

two-channel chiral unitary approach