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
收藏
页码：162 / 170
页数：9
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