5_Lambda-He和12_Lambda-C非介子弱衰变的中子和质子能谱
核实验
2009-11-10 v1
摘要
我们同时测量了通过(pi^+,k^+)反应产生的5_Lambda-He和12_Lambda-C超核在非介子弱衰变中发射的中子和质子的能谱，其统计量远高于先前实验。在60 MeV的高能量阈值下，两种超核的中子与质子产额比均约为2，这表明中子诱导和质子诱导衰变道Gn(Lambda n -> nn)/Gp(Lambda p -> np)的比率约为0.5。在中子能谱中，我们发现低能成分的产额出乎意料地大，即使对于5_Lambda-He也是如此。
引用
@article{arxiv.nucl-ex/0406020,
title = {Neutron and proton energy spectra from the non-mesonic weak decays of 5_Lambda-He and 12_Lambda-C},
author = {S. Okada and S. Ajimura and K. Aoki and A. Banu and H. C. Bhang and T. Fukuda and O. Hashimoto and J. I. Hwang and S. Kameoka and B. H. Kang and E. H. Kim and J. H. Kim and M. J. Kim and T. Maruta and Y. Miura and Y. Miyake and T. Nagae and M. Nakamura and S. N. Nakamura and H. Noumi and Y. Okayasu and H. Outa and H. Park and P. K. Saha and Y. Sato and M. Sekimoto and T. Takahashi and H. Tamura and K. Tanida and A. Toyoda and K. Tsukada and T. Watanabe and H. J. Yim},
journal= {arXiv preprint arXiv:nucl-ex/0406020},
year = {2009}
}
备注
13pages, 4figures, submitted to Physics Letters B