Effect of the α1(1260) resonance on the ρ → 4π and ω,φ → 5π decay widths

被引：7

作者：

Achasov, N. N. ^{[1
]}

Kozhevnikov, A. A. ^{[1
]}

机构：

[1] Russian Acad Sci, Siberian Div, Sobolev Inst Math, Novosibirsk 630090, Russia

来源：

PHYSICS OF ATOMIC NUCLEI | 2006年 / 69卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/S1063778806020141

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The contribution of the a(1)(1260) meson to the p(770) --> 4 pi, omega(782) --> 5 pi, and phi(1020) --> 5 pi decay amplitudes is analyzed on be basis of the chiral model of pseudoscalar, vector, and axial-vector mesons that is based on generalized hidden local symmetry and which is supplemented with terms induced by the Wess-Zumino anomaly. It is shown that the intensities of the above decays are enhanced upon taking into account be a(1) meson in intermediate states. For the a(1)-meson mass m(a1) varying from 1.23 GeV to m(rho)root 2 = 1.09 GeV, the enhancement factor grows from 1.3 to 1.9.

引用

页码：293 / 305

页数：13

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