|
|||||
|
|
Mesonic and non-mesonic decay widths of ΛC |
|
| Authors: | H Outa S Ajimura K Aoki H Bhang T Hasegawa O Hashimoto H Hotchi Y D Kim T Kishimoto K Maeda H Noumi Y Ohta K Omata H Park Y Sato M Sekimoto T Shibata T Takahashi and M Youn |
| Institution: | a High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305, Japan b Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan c Department of Physics, Seoul University, Seoul 151-742, Korea d Graduate School of Science, University of Tokyo, Tokyo 113-0033, Japan e Physics Department, Tohoku University, Sendai 980-8578, Japan |
| Abstract: | Results are reported on the precise measurement of the lifetime and the weak-decay branching ratios with charged particle(π? and proton) emission from Λ12C formed via 12C(π+,K+) reaction. The π? 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, Γ(Λ + n → n + n), in the non-mesonic weak decay, which cannot be explained by the current theoretical calculations. |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ | |