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.
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收藏
页码：221 / 224
页数：4
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