S-wave Kπ scattering in chiral perturbation theory with resonances

被引：178

作者：

Jamin, M

Oller, JA

Pich, A

机构：

[1] Heidelberg Univ, Inst Theoret Phys, D-69120 Heidelberg, Germany

[2] Forschungszentrum Julich, Inst Kernphys Theorie, D-52425 Julich, Germany

[3] Univ Valencia, Dept Fis Teor, IFIC, CSIC, E-46071 Valencia, Spain

来源：

NUCLEAR PHYSICS B | 2000年 / 587卷 / 1-3期

关键词：

partial-wave analysis; chiral Lagrangians; meson-meson interactions; inelastic scattering; two-particle final states;

D O I：

10.1016/S0550-3213(00)00479-X

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：

We present a detailed analysis of S-wave K pi scattering up to 2 GeV, making use of the resonance chiral Lagrangian predictions together with a suitable unitarisation method. Our approach incorporates known theoretical constraints at low and high energies. The present experimental status, with partly conflicting data from different experiments, is discussed. Our analysis allows to resolve some experimental ambiguities, but better data are needed in order to determine the cross-section in the higher-energy range, Our best fits are used to determine the masses and widths of the relevant scalar resonances in this energy region. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：331 / 362

页数：32

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