阈值附近 p+p->p+p+η 中的高部分波
核实验
2008-11-26 v2
摘要
在阈值以上 16 和 37 MeV 的过剩能量处，对 p+p->p+p+η 反应中 η 介子产生的排他性测量已经完成。对相空间的偏离主要由质子-质子末态相互作用主导，这尤其影响了 η 介子的能量分布。然而，在较高能量下也给出了 η 介子以及末态质子-质子对的角分布中存在各向异性的证据，这可能与该系统中与主导 S 波项干涉的 D 波有关。η 角各向异性的符号表明 ρ 交换对该反应很重要。
引用
@article{arxiv.nucl-ex/9811003,
title = {Higher Partial Waves in p+p->p+p+eta near Threshold},
author = {H. Calen and J. Dyring and G. Faldt and K. Fransson and L. Gustafsson and S. Haggstrom and B. Hoistad and J. Johanson and A. Johansson and T. Johansson and S. Kullander and A. Mortsell and R. Ruber and J. Zlomanczuk and C. Ekstrom and K. Kilian and W. Oelert and T. Sefzick and R. Bilger and W. Brodowski and H. Clement and G. J. Wagner and A. Bondar and A. Kuzmin and B. Shwartz and V. Sidorov and A. Sukhanov and V. Dunin and B. Morosov and A. Povtorejko and A. Sukhanov and A. Zernov and A. Kupsc and P. Marciniewski and J. Stepaniak and J. Zabierowski and A. Turowiecki and Z. Wilhelmi and C. Wilkin},
journal= {arXiv preprint arXiv:nucl-ex/9811003},
year = {2008}
}
备注
16 pages, LaTeX2e, 3 EPS Figures, Updated version, Accepted for publication in Phys. Lett. B