质子-质子碰撞中的双π产生——实验总截面及其同位旋分解
核实验
2009-09-11 v1
摘要
在CELSIUS上，通过从阈值到 = 1.36 GeV的独占测量，研究了pp碰撞中的双π产生。获得了、、以及道的总截面和微分截面。对于中间入射能量 1 GeV，即超出罗珀激发但在激发起始的区域，总截面在1.2 GeV附近比理论预测低了一个数量级，而截面则比预测大了五倍。总截面的同位旋分解在罗珀激发区域显示出类似s道的能量依赖性，以及除之外的同位旋3/2共振的显著贡献。讨论了和作为可能的候选者。
引用
@article{arxiv.0906.3087,
title = {Two-Pion Production in Proton-Proton Collisions -- Experimental Total Cross Sections and their Isospin Decomposition},
author = {T. Skorodko and M. Bashkanov and D. Bogoslawsky and H. Calen and H. Clement and E. Doroshkevich and L. Demiroers and C. Ekstrom and K. Fransson and L. Gustafsson and B. Hoistad and G. Ivanov and M. Jacewicz and E. Jiganov and T. Johansson and O. Khakimova and S. Keleta and I. Koch and F. Kren and S. Kullander and A. Kupsc and P. Marciniewski and R. Meier and B. Morosov and C. Pauly and H. Petren and Y. Petukhov and A. Povtorejko and R. J. M. Y. Ruber and K. Schonning and W. Scobel and B. Shwartz and J. Stepaniak and P. Thorngren-Engblom and V. Tikhomirov and G. J. Wagner and M. Wolke and A. Yamamoto and J. Zabierowski and J. Zlomanczuk},
journal= {arXiv preprint arXiv:0906.3087},
year = {2009}
}