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

Journal of High Energy Physics, Feb 2012

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.

This is a preview of a remote PDF: https://link.springer.com/content/pdf/10.1007%2FJHEP02%282012%29099.pdf

Rikkert Frederix, Stefano Frixione, Valentin Hirschi, Fabio Maltoni, Roberto Pittau, Paolo Torrielli. Four-lepton production at hadron colliders: aMC@NLO predictions with theoretical uncertainties, Journal of High Energy Physics, 2012, 99, DOI: 10.1007/JHEP02(2012)099