Resonance properties from the finite-volume energy spectrum

被引：87
作者：
Bernard, V. [1 ]
Lage, M. [2 ]
Meissner, U. -G. [2 ,3 ,4 ]
Rusetsky, A. [2 ]
机构：
[1] Univ Strasbourg, Phys Theor Lab, 3-5 Rue Univ, F-67084 Strasbourg, France
[2] Univ Bonn, Helmholtz Inst Strahlem & Kernphys, D-53115 Bonn, Germany
[3] Forschungszentrum Julich, Inst Kernphys Theorie, D-52425 Julich, Germany
[4] Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2008年 / 08期
关键词：
lattice QCD; discrete and finite symmetries; lattice quantum field theory;
D O I：
10.1088/1126-6708/2008/08/024
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
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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页数：27
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