η'介子总宽度的测定
核实验
2010-09-28 v2
摘要
利用冷却同步加速器COSY的低发射度质子束和COSY-11探测器系统的高动量精度，以0.33 MeV/c²（半高全宽）的分辨率测量了η'介子的质量分布，将实验质量分辨率相比先前结果提高了近一个数量级。基于超过2300个重建的pp → pp η'事件样本，确定η'介子的总宽度为0.226 ± 0.017（统计）± 0.014（系统）MeV/c²。
引用
@article{arxiv.1008.5294,
title = {Determination of the total width of the eta' meson},
author = {E. Czerwinski and P. Moskal and D. Grzonka and R. Czyzykiewicz and D. Gil and B. Kamys and A. Khoukaz and J. Klaja and P. Klaja and W. Krzemien and W. Oelert and J. Ritman and T. Sefzick and M. Siemaszko and M. Silarski and J. Smyrski and A. Taschner and M. Wolke and P. Wustner and J. Zdebik and M. Zielinski and W. Zipper},
journal= {arXiv preprint arXiv:1008.5294},
year = {2010}
}
备注
4 pages, 4 figures