Weak decays of medium and heavy Λ hypernuclei -: art. no. 044314

被引：52
|
作者：
Alberico, WM
De Pace, A
Garbarino, G
Ramos, A
机构：
[1] Univ Turin, Dipartimento Fis Teor, I-10125 Turin, Italy
[2] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy
[3] Univ Barcelona, Dept Estruct & Constituents Mat, E-08028 Barcelona, Spain
来源：
PHYSICAL REVIEW C | 2000年 / 61卷 / 04期
关键词：
D O I：
10.1103/PhysRevC.61.044314
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 have made a new evaluation of the Lambda decay width in nuclear matter within the propagator method. Through the local density approximation it is possible to obtain results in finite nuclei. We have also studied the dependence of the widths on the NN and Lambda N strong short-range correlations. Using reasonable values for the parameters that control these correlations, as well as realistic nuclear densities and Lambda wave functions, we show that it is possible to reproduce the experimental decay rates in a wide range of mass numbers (from medium to heavy hypernuclei); however, the question related to the Gamma n / Gamma p ratio remains open.
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页数：10
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