2 AGeV 碳靶上 6Li 弹核产物的超核谱学
核实验
2013-07-01 v2
摘要
进行了一项旨在证明利用重离子束进行超核谱学可行性的新实验。利用不变质量法，对 2 AGeV 下 6Li 弹核轰击碳靶产生的超核产物进行了谱学研究。分别在 p+\pi^-、3He+\pi^- 和 4He+\pi^- 末态中观测到了 \Lambda 超子以及 3\Lambda H 和 4\Lambda H 超核的信号，显著性值分别为 6.7、4.7 和 4.9\sigma。通过利用无分箱最大似然拟合方法分析来自次级顶点分布的固有衰变时间，推导出它们的寿命值分别为：\Lambda 为 ps，3\Lambda H 为 ps，4\Lambda H 为 ps。
引用
@article{arxiv.1305.4871,
title = {Hypernuclear spectroscopy of products from 6Li projectiles on a carbon target at 2 AGeV},
author = {C. Rappold and E. Kim and D. Nakajima and T. R. Saito and O. Bertini and S. Bianchin and V. Bozkurt and M. Kavatsyuk and Y. Ma and F. Maas and S. Minami and B. Özel-Tashenov and K. Yoshida and P. Achenbach and S. Ajimura and T. Aumann and C. Ayerbe Gayoso and H. C. Bhang and C. Caesar and S. Erturk and T. Fukuda and B. Göküzüm and E. Guliev and T. Hiraiwa and J. Hoffmann and G. Ickert and Z. S. Ketenci and D. Khaneft and M. Kim and S. Kim and K. Koch and N. Kurz and A. Le Fèvre and Y. Mizoi and M. Moritsu and T. Nagae and L. Nungesser and A. Okamura and W. Ott and J. Pochodzalla and A. Sakaguchi and M. Sako and C. J. Schmidt and M. Sekimoto and H. Simon and H. Sugimura and T. Takahashi and G. J. Tambave and H. Tamura and W. Trautmann and S. Voltz and N. Yokota and C. J. Yoon},
journal= {arXiv preprint arXiv:1305.4871},
year = {2013}
}
备注
13 pages, 10 figures, accepted for publication in Nuclear Physics A, v2 : revised few references