COSY-11 上 d-p 碰撞中 3He-η 系统的研究
核实验
2009-03-20 v1
摘要
我们给出了在 η 产生阈值附近 dp → 3He X（X=π0,η）测量的初步结果。数据是在 COSY 内靶氘束慢扫描散射到质子靶上期间获取的。3He 出射粒子由 COSY-11 探测装置记录。正在进行的分析将给出超出能量从阈值到 9 MeV 范围内 dp → 3He η 总截面和微分截面的高精度数据。反应 dp → 3He π0 的初步激发函数未显示任何可能源自 3He-η 束缚态衰变的结构。我们还给出了 dp → 3He X 道的阈值激发曲线。与 SATURNE 的相应结果相反，我们在 η 阈值附近未看到尖点。
引用
@article{arxiv.nucl-ex/0603023,
title = {Study of the 3He-eta system in d-p collisions at COSY-11},
author = {J. Smyrski and H. -H. Adam and A. Budzanowski and E. Czerwinski and R. Czyzykiewicz and D. Gil and D. Grzonka and A. Heczko and M. Janusz and L. Jarczyk and B. Kamys and A. Khoukaz and K. Kilian and P. Klaja and J. Majewski and P. Moskal and W. Oelert and C. Piskor-Ignatowicz and J. Przerwa and J. Ritman and T. Rozek and R. Santo and T. Sefzick and M. Siemaszko and A. Taeschner and P. Winter and M. Wolke and P. Wuestner and Z. Zhang and W. Zipper},
journal= {arXiv preprint arXiv:nucl-ex/0603023},
year = {2009}
}
备注
8 pages; 5 figures; Talk at Eta05 Workshop on Production and Decay of eta and eta-prime Mesons, Cracow, Poland, 15-18 Sep 2005; Acta Phys. Slovaca, in print