CHIRAL PERTURBATION-THEORY FOR ETA-]PI(O)GAMMA-GAMMA

被引：73

作者：

AMETLLER, L

BIJNENS, J

BRAMON, A

CORNET, F

机构：

[1] CERN,DIV THEORY,CH-1211 GENEVA 23,SWITZERLAND

[2] UNIV AUTONOMA BARCELONA,FIS TEOR GRP,E-08193 BARCELONA,SPAIN

[3] UNIV GRANADA,DEPT FIS TEOR & COSMOS,E-18071 GRANADA,SPAIN

来源：

PHYSICS LETTERS B | 1992年 / 276卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(92)90561-H

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The eta --> pi-0-gamma-gamma decay amplitude is discussed in the general context of chiral perturbation theory assuming that the low-energy constants (counterterms) are saturated by the known meson resonances. The suppression of the lowest order contributions is understood in physical terms. A reasonable agreement with the experimental decay width is achieved.

引用

页码：185 / 190

页数：6

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