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arxiv: 0806.4495 · v2 · pith:7QNY7STCnew · submitted 2008-06-27 · ✦ hep-lat · hep-ph

Resonance properties from the finite-volume energy spectrum

Veronique Bernard (Louis Pasteur U. , Strasbourg I) , Michael Lage (Bonn U. , HISKP) , Ulf-G. Mei{\ss}ner (Bonn U. , HISKP , FZ Juelich) , Akaki Rusetsky (Bonn U. This is my paper
classification ✦ hep-lat hep-ph
keywords energylatticeresonancespectrumaccuracyallowanalysisanalyze
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A new method based on the concept of probability distribution is proposed to analyze the finite volume energy spectrum in lattice QCD. Using synthetic lattice data, we demonstrate that for the channel with quantum numbers of the Delta-resonance a clear resonance structure emerges in such an analysis. Consequently, measuring the volume-dependence of the energy levels in lattice QCD will allow to determine the mass and the width of the Delta with reasonable accuracy.

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