Dynamical coupled-channel approaches on a momentum lattice

被引：56

作者：

Doering, M. ^{[1
,2
]}

Haidenbauer, J. ^{[3
,4
,5
]}

Meissner, U. -G. ^{[1
,2
,3
,4
,5
]}

Rusetsky, A. ^{[1
,2
]}

机构：

[1] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany

[2] Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany

[3] Forschungszentrum Julich, Inst Adv Simulat, D-52425 Julich, Germany

[4] Forschungszentrum Julich, Julich Ctr Hadron Phys, D-52425 Julich, Germany

[5] Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany

来源：

EUROPEAN PHYSICAL JOURNAL A | 2011年 / 47卷 / 12期

基金：

美国国家科学基金会;

关键词：

MESON SCATTERING; CHIRAL DYNAMICS; DEPENDENCE; RESONANCES; F(0)(980); STATES; PHASE;

D O I：

10.1140/epja/i2011-11163-7

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Dynamical coupled-channel approaches are a widely used tool in hadronic physics that allow to analyze different reactions and partial waves in a consistent way. In such approaches the basic interactions are derived within an effective Lagrangian framework and the resulting pseudo-potentials are then unitarized in a coupled-channel scattering equation. We propose a scheme that allows for a solution of the arising integral equation in discretized momentum space for periodic as well as anti-periodic boundary conditions. This permits to study finite-size effects as they appear in lattice QCD simulations. The new formalism, at this stage with a restriction to S-waves, is applied to coupled-channel models for the sigma(600), f(0)(980), and a(0)(980) mesons, and also for the Lambda(1405) baryon. Lattice spectra are predicted.

引用

页数：7

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