6533b7d2fe1ef96bd125eaab

RESEARCH PRODUCT

Unitarized Chiral Perturbation Theory in a finite volume: scalar meson sector

Akaki RusetskyMichael DöringUlf-g. MeißnerEulogio Oset

subject

Nuclear and High Energy PhysicsChiral perturbation theoryeffect [threshold]MesonNuclear TheoryHigh Energy Physics::LatticeFOS: Physical scienceschiral [perturbation theory]f0(980)a0(980)Nuclear Theory (nucl-th)High Energy Physics - Phenomenology (hep-ph)High Energy Physics - LatticeLattice (order)relativistic [propagator]unitarityddc:530energy levelsScalar mesonnumerical calculationsMathematical physicsPhysicsFinite volume methodScatteringscalar [resonance]High Energy Physics - Lattice (hep-lat)PropagatorFísicascalar mesonLattice QCDf0(600)boundary conditionpole [resonance]High Energy Physics - Phenomenologyfinite size

description

We develop a scheme for the extraction of the properties of the scalar mesons f0(600), f0(980), and a0(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.

yearjournalcountryeditionlanguage
2011-07-20
10.1140/epja/i2011-11139-7http://arxiv.org/abs/1107.3988