Partial widths for the decays η(1295) → γγ and η(1440) → γγ

被引：13

作者：

Anisovich, AV ^{[1
]}

Anisovich, VV

Nikonov, VA

Montanet, L

机构：

[1] St Petersburg Nucl Phys Inst, Gatchina 188350, Russia

[2] CERN, CH-1211 Geneva 23, Switzerland

来源：

EUROPEAN PHYSICAL JOURNAL A | 1999年 / 6卷 / 03期

关键词：

D O I：

10.1007/s100500050342

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：

We discuss gamma gamma partial widths of pseudoscalar/isoscalar mesons eta(M) in the mass region M similar to 1000 - 1500 MeV. The transition amplitudes eta(1295) --> gamma gamma and eta(1440) --> gamma gamma are studied within an assumption that the decaying mesons are the members of the first radial excitation nonet 2(1)S(0)q (q) over bar. The calculations show that partial widths being of the order of 0.1 keV are dominantly due to the ni meson component while the contribution of the s (s) over bar component is small.

引用

页码：247 / 249

页数：3

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