质子-质子碰撞中 Λ 与 Σ(0) 阈值产生的比较
核实验
2008-11-26 v1
摘要
给出了关联奇异产生反应 pp --> p K(+) Λ 和 pp --> p K(+) Σ(0) 的阈值测量。尽管观察到激发函数形状有轻微差异，但数据最显著的特征是在相同过剩能量下 Σ(0) 产生的总截面似乎比 Λ 粒子的总截面小约 28 倍。结论是强 Σ(0)-p 末态相互作用，特别是 Σ-N --> Λ-p 转换反应，是 Σ 信号产额减少的可能原因。该假设与文献中的其他实验证据一致。
引用
@article{arxiv.nucl-ex/9811004,
title = {Comparison of Lambda and Sigma(0) Threshold Production in Proton-Proton Collisions},
author = {S. Sewerin and G. Schepers and J. T. Balewski and A. Budzanowski and W. Eyrich and M. Fritsch and C. Goodman and D. Grzonka and J. Haidenbauer and C. Hanhart and M. Hofmann and L. Jarczyk and M. Jochmann and A. Khoukaz and K. Kilian and M. K"ohler and T. Lister and P. Moskal and W. Oelert and I. Pellmann and C. Quentmeier and R. Santo and U. Seddik and T. Sefzick and J. Smyrski and F. Stinzing and A. Strzalkowski C. Wilkin and M. Wolke and P. W"ustner and D. Wyrwa},
journal= {arXiv preprint arXiv:nucl-ex/9811004},
year = {2008}
}
备注
13 pages, 3 figures, 1 table