Electroweak corrections to hadronic event shapes and jet production in e+e− annihilation
Electroweak corrections to hadronic event shapes and jet production in e+e− annihilation
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对强子事件形状和 e+e− 湮灭中射流产生的电弱校正
DOI：
10.1016/j.nuclphysb.2010.04.009
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
C. Kurz
中科院分区：
文献类型：
--
作者：
A. Denner;S. Dittmaier;T. Gehrmann;C. Kurz
我们提出了对正负电子对撞机中三射流产生和相关事件形状可观测量的电弱 O(α3αs) 校正的完整计算。 Z 玻色子共振在复质量方案中描述，使得计算在共振和离壳区域均有效。高阶初始态辐射包含在前导对数近似中。我们正确地考虑了对总强子截面的修正和实验光子隔离标准。为此，我们在切片和减法形式中实现了夸克到光子碎裂函数的贡献。研究了电弱校正对各种事件形状分布和三射流速率的影响。它们通常处于百分之几的水平，即使在适当的削减之后，仍然会发现辐射返回的残余物。
We present a complete calculation of the electroweak O(α3αs) corrections to three-jet production and related event-shape observables at electron–positron colliders. The Z-boson resonance is described within the complex-mass scheme, rendering the calculation valid both in the resonance and off-shell regions. Higher-order initial-state radiation is included in the leading-logarithmic approximation. We properly account for the corrections to the total hadronic cross section and for the experimental photon isolation criteria. To this end we implement contributions of the quark-to-photon fragmentation function both in the slicing and subtraction formalism. The effects of the electroweak corrections on various event-shape distributions and on the three-jet rate are studied. They are typically at the few-percent level, and remnants of the radiative return are found even after inclusion of appropriate cuts.
DOI：
10.1140/epjc/s10052-009-1149-1
发表时间：
2008-10
期刊：
arXiv: High Energy Physics - Experiment
影响因子：
--
作者：
S. Bethke;S. Kluth;C. Pahl;J. Schieck;The Jade Collaboration
通讯作者：
S. Bethke;S. Kluth;C. Pahl;J. Schieck;The Jade Collaboration
匹配 NLLA NNLO 以获得事件形状分布
影响因子：
4.4
作者：
Gehrmann T
通讯作者：
Gehrmann T