氘核上的η'介子光生反应
核实验
2015-03-17 v1
摘要
利用组合的Crystal Barrel-TAPS探测器测量了束缚在氘核中的核子上的准自由η'介子光生反应。实验在德国波恩ELSA电子加速器的标记光子束上进行，入射光子能量从产生阈值到2.5 GeV。η'介子与反冲质子和反冲中子符合探测。准自由质子数据与自由质子的结果吻合良好，表明核效应没有显著影响。与反冲中子的符合提供了γn→nη'反应的首批数据。此外，还获得了氘核上相干η'产生的首次估计。与模型预测一致，发现该道的总截面非常小，最多在几个纳靶的水平。将数据与考虑核子共振和t道交换贡献的模型计算进行了比较。
引用
@article{arxiv.1012.1021,
title = {Photoproduction of $\eta '$-mesons off the deuteron},
author = {I. Jaegle and T. Mertens and A. Fix and F. Huang and K. Nakayama and L. Tiator and A. V. Anisovich and J. C. S. Bacelar and B. Bantes and O. Bartholomy and D. E. Bayadilov and R. Beck and Y. A. Beloglazov and R. Castelijns and V. Crede and H. Dutz and D. Elsner and R. Ewald and F. Frommberger and C. Funke and R. Gregor and A. B. Gridnev and E. Gutz and W. Hillert and S. Hoeffgen 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. Loehner and I. V. Lopatin and S. Lugert and D. Menze and J. G. Messchendorp and V. Metag and V. A. Nikonov and M. Nanova and D. V. Novinski and R. Novotny and M. Ostrick and L. M. Pant and H. van Pee and M. Pfeiffer and A. Roy and A. V. Sarantsev and S. Schadmand and C. Schmidt and H. Schmieden and B. Schoch and S. V. Shende and V. Sokhoyan and A. Suele and V. V. Sumachev and T. Szczepanek and U. Thoma and D. Trnka and R. Varma and D. Walther and C. Wendel},
journal= {arXiv preprint arXiv:1012.1021},
year = {2015}
}
备注
Accepted for publication in Eur. Phys. J. A