Can one see the number of colors in η,η′→π+π-γ? -: art. no. 014027

被引：4

作者：

Borasoy, B ^{[1
]}

Lipartia, E

机构：

[1] Tech Univ Munich, Dept Phys, D-85747 Garching, Germany

[2] Univ Bonn, Helmholtz Inst Strahlen & Kernphys Theorie, D-53115 Bonn, Germany

来源：

PHYSICAL REVIEW D | 2005年 / 71卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.71.014027

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the decays eta,eta'-->pi(+)pi(-)gamma up to next-to-leading order in the framework of the combined 1/N-c and chiral expansions. Counter terms of unnatural parity at next-to-leading order with unknown couplings are important to acommodate the results both to the experimental decay width and the photon spectrum. The presence of these coefficients does not allow for a determination of the number of colors from these decays.

引用

页码：014027 / 1

页数：5

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