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


Frederix, Rikkert; Frixione, Stefano; Hirschi, Valentin; Maltoni, Fabio; Pittau, Roberto; Torrielli, Paolo (2012). Four-lepton production at hadron colliders: aMC@NLO predictions with theoretical uncertainties. Journal of High Energy Physics, 2012(2).

Abstract

We use aMC@NLO to study the production of four charged leptons at the LHC, performing parton showers with both HERWIG and P ythia6. Our underlying matrix element calculation features the full next-to-leading order mathcal{O}left( {{α_s}} right) result and the mathcal{O}left( {α_s^2} right) 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.

Abstract

We use aMC@NLO to study the production of four charged leptons at the LHC, performing parton showers with both HERWIG and P ythia6. Our underlying matrix element calculation features the full next-to-leading order mathcal{O}left( {{α_s}} right) result and the mathcal{O}left( {α_s^2} right) 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.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:February 2012
Deposited On:22 Jan 2013 16:53
Last Modified:07 Dec 2017 18:19
Publisher:Springer
ISSN:1029-8479
Additional Information:The original publication is available at www.springerlink.com
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1007/JHEP02(2012)099

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