PHOTON-PHOTON SCATTERING, PION POLARIZABILITY, AND CHIRAL-SYMMETRY

被引：98

作者：

DONOGHUE, JF

HOLSTEIN, BR

机构：

[1] Department of Physics and Astronomy, University of Massachusetts, Amherst

来源：

PHYSICAL REVIEW D | 1993年 / 48卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.48.137

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recent attempts to detect the pion polarizability via analysis of gammagamma --> pipi measurements are examined. The connection between calculations based on dispersion relations and on chiral perturbation theory is established by matching the low-energy chiral amplitude with that given by a full dispersive treatment. Using the values for the polarizability required by chiral symmetry, predicted and experimental cross sections are shown to be in agreement.

引用

页码：137 / 146

页数：10

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