sqrt(s) = 200 GeV 下 p+p 碰撞中中心快度区直接光子产生
高能物理 - 实验
2008-11-26 v1
摘要
本文给出了 sqrt(s)=200 GeV 下 p+p 碰撞中直接光子的测量结果。在横动量范围 5.5 < p_T < 7 GeV/c 内，观察到了高于 pi^0 --> gamma+gamma、eta --> gamma+gamma 及其他衰变背景的光子超出。将结果与次领头阶微扰 QCD 计算进行了比较。在误差范围内，QCD 计算与测量结果符合良好。
引用
@article{arxiv.hep-ex/0502006,
title = {Mid-Rapidity Direct-Photon Production in p+p Collisions at sqrt(s) = 200 GeV},
author = {PHENIX Collaboration and S. Adler},
journal= {arXiv preprint arXiv:hep-ex/0502006},
year = {2008}
}
备注
330 authors, 7 pages text, RevTeX, 2 figures, 2 tables. Submitted to Physical Review D. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html