Mesonic and non-mesonic decay widths of Λ12C

被引：8
|
作者：
Outa, H
Ajimura, S
Aoki, K
Bhang, H
Hasegawa, T
Hashimoto, O
Hotchi, H
Kim, YD
Kishimoto, T
Maeda, K
Noumi, H
Ohta, Y
Omata, K
Park, H
Sato, Y
Sekimoto, M
Shibata, T
Takahashi, T
Youn, M
机构：
[1] High Energy Accelerator Res Org, Tsukuba, Ibaraki 305, Japan
[2] Osaka Univ, Dept Phys, Osaka 5600043, Japan
[3] Seoul Natl Univ, Dept Phys, Seoul 151742, South Korea
[4] Univ Tokyo, Grad Sch Sci, Tokyo 1130033, Japan
[5] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan
来源：
NUCLEAR PHYSICS A | 2000年 / 670卷
关键词：
D O I：
10.1016/S0375-9474(00)00113-5
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：
Results are reported on the precise measurement of the lifetime and the weak-decay branching ratios with charged particle(pi(-) and proton) emission from C-12(Lambda) formed via C-12(pi(+), K+) reaction. The pi(-) mesonic decay width is consistent with the calculations including the pion wave function distortion effect. We observed large contribution of the neutron-stimulated decay widths, Gamma(Lambda + n --> n + n), in the non-mesonic weak decay, which cannot be explained by the current theoretical calculations.
引用
收藏
页码：281C / 284C
页数：4
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