ON THE PRODUCTION OF LOW-MASS LEPTON PAIRS AT LARGE TRANSVERSE-MOMENTUM
ON THE PRODUCTION OF LOW-MASS LEPTON PAIRS AT LARGE TRANSVERSE-MOMENTUM
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DOI：
10.1016/0370-2693(88)90966-5
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发表时间：
1988-08
影响因子：
4.4
通讯作者：
P. Aurenche;R. Baier;M. Fontannaz
中科院分区：
文献类型：
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作者：
P. Aurenche;R. Baier;M. Fontannaz
我们将大横向动量下产生低质量轻子 (Drell-Yan) 对的横截面与包含的瞬发（真实）光子谱联系起来。然后在 QCD 耦合常数 αs 中以二阶评估后一个；预测是使用次前导夸克/胶子密度获得的。最终成功与UA1 Collaboration近期配对数据进行定量比较。因此，所考虑的过程被推测为在小x值下质子结构的极其有用的探测。
We relate the cross section for the production of low-mass lepton (Drell-Yan) pairs at large transverse momentum to the inclusive prompt (real) photon spectrum. The latter one is then evaluated at second order in the QCD coupling constant αs; predictions are obtained using next-to-leading order quark/gluon densities. Finally, a quantitative comparison with the recent pair data of the UA1 Collaboration is successfully performed. Therefore the considered process is conjectured as an extremely useful probe of the proton structure at small values of x.