aMCfast: automation of fast NLO computations for PDF fits

Bertone, Valerio, Frederix, Rikkert, Frixione, Stefano, Rojo, Juan and Sutton, Mark (2014) aMCfast: automation of fast NLO computations for PDF fits. Journal of High Energy Physics, 1408. p. 166. ISSN 1029-8479

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Abstract

We present the interface between MadGraph5 aMC@NLO, a self-contained program that calculates cross sections up to next-to-leading order accuracy in an automated manner, and APPLgrid, a code that parametrises such cross sections in the form of look-up tables which can be used for the fast computations needed in the context of PDF fits. The main characteristic of this interface, which we dub aMCfast, is its being fully automated as well, which removes the need to extract manually the process-specific information for additional physics processes, as is the case with other matrix-element calculators, and renders it straightforward to include any new process in the PDF fits. We demonstrate this by studying several cases which are easily measured at the LHC, have a good constraining power on PDFs, and some of which were previously unavailable in the form of a fast interface.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Experimental Particle Physics Research Group
Subjects: Q Science > QC Physics > QC0770 Nuclear and particle physics. Atomic energy. Radioactivity > QC0793 Elementary particle physics
Depositing User: Mark Sutton
Date Deposited: 04 Oct 2016 13:28
Last Modified: 07 Mar 2017 04:46
URI: http://sro.sussex.ac.uk/id/eprint/63794

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