低x下光子结构函数F_2^gamma的测量
高能物理 - 实验
2008-11-26 v1
摘要
使用OPAL探测器在中心-of-mass能量sqrt{s_ee} ~ M_{Z^0}处收集的e+e-数据研究了深层非弹性电子-光子散射。探索了Q^2范围为1.1至6.6 GeV/c^2的光子结构函数F_2^gamma(x,Q^2)，且之前从未在如此低的x值处进行过测量。为探测此运动学区域，选取了束电子散射进入OPAL亮度热力学计量器的事件，散射角在27至55毫弧度之间。presented of the photon structure function F_2^gamma(x,Q^2) at <Q^2> = 1.86 GeV^2 and 3.76 GeV^2 in five logarithmic x bins from 0.0025 to 0.2。
引用
@article{arxiv.hep-ex/9708028,
title = {Measurement of the Photon Structure Function F_2^gamma at Low x},
author = {The OPAL Collaboration and K. Ackerstaff et al},
journal= {arXiv preprint arXiv:hep-ex/9708028},
year = {2008}
}
备注
13 pages, LaTeX, uses a4p.sty, 3 eps figures included, submitted to Phys. Lett. B