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：

瑞士国家科学基金会; 美国国家科学基金会;

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 31 条

[1] MadGraph/MadEvent v4: the new web generation [J].

Alwall, Johan ;

Demin, Pavel ;

de Visscher, Simon ;

Frederix, Rikkert ;

Herquet, Michel ;

Maltoni, Fabio ;

Plehn, Tilman ;

Rainwaterd, David L. ;

Stelzer, Tim .

JOURNAL OF HIGH ENERGY PHYSICS, 2007, (09)

[2] Matched predictions for Higgs production via heavy-quark loops in the standard model and beyond [J].

Alwall, Johan ;

Li, Qiang ;

Maltoni, Fabio .

PHYSICAL REVIEW D, 2012, 85 (01)

[3]

[Anonymous], ARXIV08070024

[4]

Binoth T, 2006, J HIGH ENERGY PHYS, DOI 10.1088/1126-6708/2006/12/046

[5] Update on vector boson pair production at hadron colliders [J].

Campbell, JM ;

Ellis, RK .

PHYSICAL REVIEW D, 1999, 60 (11)

[6] Gluon-gluon contributions to W+W- production and Higgs interference effects [J].

Campbell, John M. ;

Ellis, R. Keith ;

Williams, Ciaran .

JOURNAL OF HIGH ENERGY PHYSICS, 2011, (10)

[7] Vector boson pair production at the LHC [J].

Campbell, John M. ;

Ellis, R. Keith ;

Williams, Ciaran .

JOURNAL OF HIGH ENERGY PHYSICS, 2011, (07)

[8]

Corcella G., 2001, JHEP, V01

[9] GLUON PRODUCTION OF GAUGE BOSONS [J].

DICUS, DA ;

KAO, C ;

REPKO, WW .

PHYSICAL REVIEW D, 1987, 36 (05) :1570-1572

[10]

Dittmaier S., HDB LHC HIGGS CROSS

← 1 2 3 4 →