High-precision QCD at hadron colliders: Electroweak gauge boson rapidity distributions at next-to-next-to leading order
High-precision QCD at hadron colliders: Electroweak gauge boson rapidity distributions at next-to-next-to leading order
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DOI：
10.1103/physrevd.69.094008
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发表时间：
2004-05-01
影响因子：
5
通讯作者：
Petriello, F
中科院分区：
文献类型：
--
作者：
Anastasiou, C;Dixon, L;Petriello, F
我们通过 QCD 中的次次领先顺序计算费米实验室 Tevatron 和 CERN LHC 产生的 W 和 Z 玻色子的速度分布。我们的结果表明，对于当前和未来实验中可获得的所有快速值，因式分解和重整化尺度的变化具有显着的稳定性。因此，这些过程是“镀金的”：当前的理论知识产生的 QCD 预测准确度优于 1%。这些结果强化了使用 W 和 Z 产生来确定部分子-部分子光度并约束大型强子对撞机上部分子分布函数的建议。例如，LHC 数据应该能够轻松地区分 MRST 获得的中心部分分布拟合与 Alekhin 获得的中心部分分布拟合。
We compute the rapidity distributions of W and Z bosons produced at the Fermilab Tevatron and the CERN LHC through next-to-next-to leading order in QCD. Our results demonstrate remarkable stability with respect to variations of the factorization and renormalization scales for all values of rapidity accessible in current and future experiments. These processes are therefore "gold-plated": current theoretical knowledge yields QCD predictions accurate to better than 1%. These results strengthen the proposal to use W and Z production to determine parton-parton luminosities and constrain parton distribution functions at the LHC. For example, LHC data should easily be able to distinguish the central parton distribution fit obtained by MRST from that obtained by Alekhin.