PI-ETA SCATTERING IN QCD

被引：61

作者：

BERNARD, V

KAISER, N

MEISSNER, UG

机构：

[1] UNIV STRASBOURG 1,DIV PHYS THEOR,F-67070 STRASBOURG,FRANCE

[2] UNIV BERN,INST THEORET PHYS,CH-3012 BERN,SWITZERLAND

来源：

PHYSICAL REVIEW D | 1991年 / 44卷 / 11期

关键词：

D O I：

10.1103/PhysRevD.44.3698

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We evaluate the pi-eta-scattering amplitude at next-to-leading order in chiral perturbation theory. We discuss the conventional approach of the pseudoscalar Goldstone bosons (pi,K,eta) only and an extension including explicit resonance fields. The contributions of these resonances saturate the low-energy constants at order E4. We present predictions for the scattering lengths and phase shifts of the low partial waves.

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页码：3698 / 3701

页数：4

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