A theoretical overview of hypernuclear weak decay

被引：10

作者：

Chumillas, C. ^{[3
,4
]}

Garbarino, G. ^{[1
,2
]}

Parreno, A. ^{[3
,4
]}

Ramos, A. ^{[3
,4
]}

机构：

[1] Univ Turin, Dipartimento Fis Teor, I-10125 Turin, Italy

[2] Ist Nazl Fis Nucl, Sezione Torino, I-10125 Turin, Italy

[3] Univ Barcelona, Dept Estructura & Constituents Mat, E-08028 Barcelona, Spain

[4] Univ Barcelona, Inst Ciencias Cosmos, E-08028 Barcelona, Spain

来源：

NUCLEAR PHYSICS A | 2008年 / 804卷

关键词：

mesonic and non-mesonic decay of hypernuclei; Gamma(n)/Gamma(p) ratio; decay asymmetries of polarized hypernuclei;

D O I：

10.1016/j.nuclphysa.2008.01.021

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 physics of the weak decay of hypemuclei is briefly reviewed from a theoretical point of view. Special regard is devoted to the recent progress concerning the determination of the non-mesonic decay widths and the asymmetry parameters. Convincing evidence has been achieved for a solution of the long-standing puzzle on the ratio Gamma(n)/Gamma(p). Very recently, it has been shown that the exchange of a pi pi pair in the weak mechanism plays a crucial role in explaining the discrepancies between theory and experiment on the decay asymmetries. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：162 / 170

页数：9

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