THE DECAY RHO(0)-]PI(+)PI(-)GAMMA AND THE CHIRAL INVARIANT INTERACTIONS OF VECTOR-MESONS

被引：17
|
作者：
HUBER, K
NEUFELD, H
机构：
[1] Institut für Theoretische Physik der Universität Wien, A-1090 Wien
来源：
PHYSICS LETTERS B | 1995年 / 357卷 / 1-2期
关键词：
D O I：
10.1016/0370-2693(95)00869-M
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Using the close relationship between the low-energy constants of chiral perturbation theory and the chiral invariant interactions of the vector meson resonances with the pseudoscalar mesons, we investigate the process rho(0) --> pi(+)pi(-)gamma. Compared with the contribution from the pure bremsstrahlung mechanism, we find an enhancement of the decay rate near the endpoint of the photon energy spectrum. Such a particular shape of the differential decay rate has indeed been observed experimentally and turns out to be an important confirmation of the theoretical concept of chiral vector meson dominance.
引用
收藏
页码：221 / 224
页数：4
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