阈区内的 pp -> pp pi pi pi 反应道
核实验
2012-08-27 v2
摘要
在 160 - 217 MeV 的过剩能量范围内测量了 pp 相互作用中瞬时产生中性与带电三π介子的截面。这包含了 pp->pp pi0pi0pi0 反应的首次测量，并以一种非常直接的方式与 pp->pp pi+pi-pi0 反应进行比较。实验在 η 介子产生阈值之上进行，截面归一化由并发测量的 pp->pp eta 反应（η 衰变为 3 个π介子）获得。由于选取了相同末态，该测量具有较低的系统误差。将测得的截面比 sigma(pp->pp pi+pi-pi0)/sigma(pp->pp pi0\pi0\pi0) 与中间态中不同同位旋轴子占主导地位的预言进行了比较。
引用
@article{arxiv.nucl-ex/0602006,
title = {The pp -> pp pi pi pi reaction channels in the threshold region},
author = {WASA Collaboration and C. Pauly and M. Jacewicz and I. Koch and M. Bashkanov and D. Bogoslawsky and H. Calén and F. Capellaro and H. Clement and L. Demirörs and C. Ekström and K. Fransson and L. Gustafsson and B. Höistad and G. Ivanov and E. Jiganov and T. Johansson and S. Keleta and S. Kullander and A. Kupść and A. Kuznetsov and P. Marciniewski and R. Meier and B. Morosov and W. Oelert and H. Pettersson and Y. Petukhov and A. Povtorejko and R. J. M. Y. Ruber and W. Scobel and K. Schönning and T. Skorodko and B. Shwartz and V. Sopov and J. Stepaniak and V. Tchernyshev and P. Thörngren Engblom and V. Tikhomirov and A. Turowiecki and G. J. Wagner and U. Wiedner and M. Wolke and A. Yamamoto and J. Zabierowski and J. Złomańczuk},
journal= {arXiv preprint arXiv:nucl-ex/0602006},
year = {2012}
}
备注
12 pages, 4 figures New discussion on the pp->pp3pi reaction mechanism