High Q**2 neutral current cross-sections in e+ p deep inelastic scattering at s**(1/2) = 318-GeV
High Q**2 neutral current cross-sections in e+ p deep inelastic scattering at s**(1/2) = 318-GeV
复制标题
s**(1/2) = 318-GeV 处 e p 深度非弹性散射中的高 Q**2 中性电流横截面
DOI：
10.1103/physrevd.70.052001
复制
发表时间：
2004
影响因子：
5
通讯作者：
Zeus Collaboration
中科院分区：
文献类型：
--
作者：
Zeus Collaboration
利用HERA的ZEUS探测器测量了e(+)p中性电流深度非弹性散射的横截面，其质量中心能量为根=318 GeV，积分光度为63.2 pb（-1）。双微分截面d(2)sigma/dxdQ(2)，给出了200gev2 lt Q(2) lt 30000 GeV2和0.005 lt x lt 0.65。给出了Q(2) gt 200gev2的单微分截面dQ(2)、dQ /dx和dQ /dy。Z-玻色子交换的影响可以在Q(2) GeV2的dsigma/dx测量中看到。本文数据与根=300 GeV时的ZEUS e(+)p中性电流数据结合，提取结构函数F-2（em）。所有结果都与标准模型的预测相吻合。
Cross sections for e(+)p neutral current deep inelastic scattering have been measured at a center-of-mass energy of roots=318 GeV with the ZEUS detector at HERA using an integrated luminosity of 63.2 pb(-1). The double-differential cross section, d(2)sigma/dxdQ(2), is presented for 200 GeV2 lt Q(2) lt 30 000 GeV2 and for 0.005 lt x lt 0.65. The single- differential cross sections dsigma/dQ(2), dsigma/dx and dsigma/dy are presented for Q(2) gt 200 GeV2. The effect of Z- boson-exchange is seen in dsigma/dx measured for Q(2) gt 10 000 GeV2. The data presented here were combined with ZEUS e(+)p neutral current data taken at roots=300 GeV and the structure function F-2(em) was extracted. All results agree well with the predictions of the Standard Model.