质子对的硬光致蜕变
核实验
2010-02-01 v2 高能物理 - 实验
摘要
我们通过gamma + 3He -> p+p+n 道，对质子对的高能光致蜕变进行了研究。使用了0.8至4.7 GeV的光子能量，其运动学条件对应于一对具有高相对动量的质子和一个几乎静止的中子。首次观察到了s-11标度行为，这是由双核子光致蜕变的组分计数规则所预测的。该标度行为的起始能量更高，且截面显著低于氘核（质子-中子对）的光致蜕变。对于低于标度区域的光子能量，发现标度化截面呈现出一种强烈的能量依赖结构，这在氘核光致蜕变中并未观察到。
引用
@article{arxiv.0908.2968,
title = {Hard Photodisintegration of a Proton Pair},
author = {I. Pomerantz and N. Bubis and K. Allada and A. Beck and S. Beck and B. L. Berman and W. Boeglin and A. Camsonne and M. Canan and K. Chirapatpimol and E. Cisbani and F. Cusanno and C. W. de Jager and C. Dutta and F. Garibaldi and O. Geagla and R. Gilman and J. Glister and D. W. Higinbotham and X. Jiang and A. T. Katramatou and E. Khrosinkova and B. Lee and J. J. LeRose and R. Lindgren and E. McCullough and D. Meekins and R. Michaels and B. Moffit and G. G. Petratos and E. Piasetzky and X. Qian and Y. Qiang and I. Rodriguez and G. Ron and A. Saha and A. J. Sarty and B. Sawatzky and E. Schulte and R. Shneor and N. Sparveris and R. Subedi and S. Strauch and V. Sulkosky and Y. Wang and B. Wojtsekhowski and X. Yan and H. Yao and X. Zhan and X. Zheng},
journal= {arXiv preprint arXiv:0908.2968},
year = {2010}
}
备注
7 pages, 3 figures, for submission to Phys. Lett. B