Radiative decays, nonet symmetry, and SU(3) breaking

被引：76

作者：

Benayoun, M ^{[1
]}

DelBuono, L

Eidelman, S

Ivanchenko, VN

O'Connell, HB

机构：

[1] Univ Paris 06, LPNHE, Paris, France

[2] Univ Paris 07, IN2P3, Paris, France

[3] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[4] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA

[5] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA

来源：

PHYSICAL REVIEW D | 1999年 / 59卷 / 11期

关键词：

D O I：

10.1103/PhysRevD.59.114027

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We reexamine the problem of simultaneously describing in a consistent way all radiative and leptonic decays of light mesons (V --> P gamma, P --> V gamma, P --> gamma gamma, V --> e(+)e(-)). For this purpose, we rely on the hidden local symmetry model in both its anomalous and non-anomalous sectors. We show that the SU(3) symmetry breaking scheme proposed by Bando, Kugo and Yamawaki, supplemented with nonet symmetry breaking in the pseudoscalar sector, allows one to reach a nice agreement with all data, except for the K*(+/-) radiative decay. An extension of this breaking pattern allows one to account for this particular decay mode too. Considered together, the whole set of radiative decays provides a pseudoscalar mixing angle theta(P) similar or equal to 11 degrees and a value for theta(V) which is similar or equal to 3 degrees from that of ideal mixing. We also show that it is impossible, in a practical sense, to disentangle the effects of nonet symmetry breaking and those of glue inside the eta', using only light meson decays. [S0556-2821(99)01013-9].

引用

页数：19

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