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

页码：281C / 284C

页数：4

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