Abstract
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 \( \mathcal{O}\left( {{\alpha_s}} \right) \) result and the \( \mathcal{O}\left( {\alpha_s^2} \right) \) 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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ArXiv ePrint: 1110.4738
On leave of absence from INFN, Sezione di Genova, Italy. (Stefano Frixione)
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Frederix, R., Frixione, S., Hirschi, V. et al. Four-lepton production at hadron colliders: aMC@NLO predictions with theoretical uncertainties. J. High Energ. Phys. 2012, 99 (2012). https://doi.org/10.1007/JHEP02(2012)099
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DOI: https://doi.org/10.1007/JHEP02(2012)099