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arXiv 1604.05083hep-exhep-ph
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组合电弱和QCD拟合到HERA数据

Combined Electroweak and QCD Fit to HERA Data

I. Abt, A. M. Cooper-Sarkar, B. Foster, C. Gwenlan, V. Myronenko, O. Turkot, K. Wichmann

摘要:

本文用电弱参数和部分子分布函数对HERA深度非弹性散射数据进行了电弱和QCD同时拟合。输入的数据是中性电流和带电电流包括截面测量的H1和ZEUS合作在ep对撞机HERA。在2004年至2007年期间记录的ZEUS和H1数据中考虑了电子束的极化。结果上的Z玻色子的u-和d-型夸克的矢量和轴矢量耦合。这些值与标准模型的预测一致。a_u和v_u上的结果代表来自单个过程的最精确测量。

英文摘要:

A simultaneous Electroweak and QCD fit of electroweak parameters and parton distribution functions to HERA data on deep inelastic scattering is presented. The input data are neutral current and charged current inclusive cross sections measured by the H1 and ZEUS collaborations at the ep collider HERA. The polarisation of the electron beam was taken into account for the ZEUS and H1 data recorded between 2004 and 2007. Results are presented on the vector and axial-vector couplings of the Z boson to u- and d-type quarks. The values are in agreement with Standard Model predictions. The results on a_u and v_u represent the most precise measurements from a single process.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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