利用d+p→3He+η反应对η-3He体系的精密研究
核实验
2016-08-14 v1
摘要
在COSY-ANKE高精度高统计量实验中，于阈值附近使用连续束流能量斜坡直至过剩能量Q为11.3 MeV且基本具有100%接受度，测量了d+p→3He+η反应的微分截面与总截面。运动学使Q的平均值可确定至约9 keV。发现对于Q>4 MeV存在高能级分波效应的证据。总截面在阈值0.5 MeV内极快上升至其最大值，意味着极大的η-3He散射长度，从而存在极接近阈值的准束缚态。
引用
@article{arxiv.nucl-ex/0701072,
title = {Precision study of the eta-3He system using the d+p->3He+eta reaction},
author = {T. Mersmann and A. Khoukaz and M. Büscher and D. Chiladze and S. Dymov and M. Hartmann and V. Hejny and A. Kacharava and I. Keshelashvili and P. Kulessa and Y. Maeda and M. Mielke and S. Mikirtychiants and H. Ohm and M. Papenbrock and D. Prasuhn and F. Rathmann and T. Rausmann and R. Schleichert and V. Serdyuk and H. -J. Stein and H. Ströher and A. Täschner and Yu. Valdau and C. Wilkin and A. Wrońska},
journal= {arXiv preprint arXiv:nucl-ex/0701072},
year = {2016}
}
备注
4 pages, 4 figures, 1 table, submitted to Phys. Rev. Lett