CHIRAL PERTURBATION-THEORY AND VECTOR-MESONS IN E+E- -]PI-0-GAMMA AND PI-0L+L-

被引：10

作者：

BRAMON, A ^{[1
]}

GRAU, A ^{[1
]}

PANCHERI, G ^{[1
]}

机构：

[1] LAB NAZL FRASCATI,IST NAZL FIS NUCL,I-00044 FRASCATI,ITALY

来源：

PHYSICS LETTERS B | 1992年 / 277卷 / 03期

关键词：

D O I：

10.1016/0370-2693(92)90757-U

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The low-energy cross-section for e+e- --> pi-0-gamma is predicted in chi-PT at next-to-leading order and the saturation of its counter-terms by vector-meson resonances is confirmed. Further details on this saturation by vector mesons are discussed for e+e- --> pi-O-mu+mu-. Cross-sections are predicted from threshold up to the omega-mass region for different choices of the relevant parameters in the lagrangian. It is suggested that measurements of these cross-sections at low-energy high luminosity e+e- machines, like DAPHNE, will allow to distinguish between different sets of parameters.

引用

页码：353 / 358

页数：6

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