反应 $\gamma p\to p\;2\pi^0$ 的高统计量研究
核实验
2015-12-07 v2
摘要
在波恩的电子加速器 ELSA 上的 Crystal Barrel/TAPS 实验中研究了光子在质子上的 2 介子光生。在辐射体中产生的光子能量被标记在 600\,MeV 至 2.5\,GeV 的能量范围内。给出了微分截面、总截面以及 的 Dalitz 图。部分数据采用产生线偏振光子的金刚石辐射体获取，并推导了束流不对称性。在 BnGa 分波分析中确定了有助于 末态的核子与 共振的性质。此处呈现的数据使我们能够确定核子与 共振经由若干中间态衰变到 的分支比。最显著的是通过 、、、 进行的衰变，但 、 和 也对该反应有贡献。
引用
@article{arxiv.1507.02488,
title = {High statistics study of the reaction $\gamma p\to p\;2\pi^0$},
author = {V. Sokhoyan and E. Gutz and V. Crede and H. van Pee and A. V. Anisovich and J. C. S. Bacelar and B. Bantes and O. Bartholomy and D. Bayadilov and R. Beck and Y. A. Beloglazov and R. Castelijns and H. Dutz and D. Elsner and R. Ewald and F. Frommberger and M. Fuchs and Ch. Funke and R. Gregor and A. B. Gridnev and W. Hillert and Ph. Hoffmeister and I. Horn and I. Jaegle and J. Junkersfeld and H. Kalinowsky and S. Kammer and V. Kleber and Frank Klein and Friedrich Klein and E. Klempt and M. Kotulla and B. Krusche and M. Lang and H. Löhner and I. V. Lopatin and S. Lugert and T. Mertens and J. G. Messchendorp and V. Metag and B. Metsch and M. Nanova and V. A. Nikonov and D. Novinsky and R. Novotny and M. Ostrick and L. Pant and M. Pfeiffer and D. Piontek and A. Roy and A. V. Sarantsev and Ch. Schmidt and H. Schmieden and T. Seifen and S. Shende and A. Süle and V. V. Sumachev and T. Szczepanek and A. Thiel and U. Thoma and D. Trnka and R. Varma and D. Walther and Ch. Wendel and A. Wilson},
journal= {arXiv preprint arXiv:1507.02488},
year = {2015}
}
备注
28 pages, 17 figures, 7 tables