Four-lepton production at hadron colliders: aMC@NLO predictions with theoretical uncertainties

被引：85

作者：

Frederix, Rikkert ^{[1
]}

Frixione, Stefano ^{[2
,3
]}

Hirschi, Valentin ^{[3
]}

Maltoni, Fabio ^{[4
]}

Pittau, Roberto ^{[5
,6
]}

Torrielli, Paolo ^{[3
]}

机构：

[1] Univ Zurich, Inst Theoret Phys, CH-8057 Zurich, Switzerland

[2] CERN, TH Unit, PH Dept, CH-1211 Geneva 23, Switzerland

[3] Ecole Polytech Fed Lausanne, ITPP, CH-1015 Lausanne, Switzerland

[4] Catholic Univ Louvain, Ctr Cosmol Particle Phys & Phenomenol CP3, B-1348 Louvain, Belgium

[5] Univ Granada, Dept Fis Teor & Cosmos, Granada, Spain

[6] Univ Granada, CAFPE, Granada, Spain

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2012年 / 02期

基金：

美国国家科学基金会; 瑞士国家科学基金会;

关键词：

NLO Computations; Hadronic Colliders; QCD; Standard Model; BOSON PAIR PRODUCTION; ZZ; O(ALPHA(S)); AMPLITUDES;

D O I：

10.1007/JHEP02(2012)099

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We use aMC@NLO to study the production of four charged leptons at the LHC, performing parton showers with both HERWIG and PYTHIA6. Our underlying matrix element calculation features the full next-to-leading order O(alpha(S)) result and the O(alpha(2)(S)) contribution of the gg channel, and it includes all off-shell, spin-correlation, virtual-photon-exchange, and interference effects. We present several key distributions together with the corresponding theoretical uncertainties. These are obtained through a process-independent technique that allows aMC@NLO to compute scale and PDF uncertainties in a fully automated way and at no extra CPU-time cost.

引用

页数：26

共 32 条

[21] Lepton-pair production at hadron colliders at N3LO in QCD
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[22] Four lepton production in gluon fusion: Off-shell Higgs effects in NLO QCD
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