# Merging meets matching in MC@NLO

Journal of High Energy Physics, Dec 2012

The next-to-leading order accuracy for MC@NLO results exclusive in J light jets is achieved if the computation is based on matrix elements that feature J and J + 1 QCD partons. The simultaneous prediction of observables which are exclusive in different light-jet multiplicities cannot simply be obtained by summing the above results over the relevant range in J; rather, a suitable merging procedure must be defined. We address the problem of such a merging, and propose a solution that can be easily incorporated into existing MC@NLO implementations. We use the automated aMC@NLO framework to illustrate how the method works in practice, by considering the production at the 8 TeV LHC of a Standard Model Higgs in association with up to J = 2 jets, and of an e + ν e pair or a $$t\overline{t}$$ pair in association with up to J = 1 jet.

This is a preview of a remote PDF: https://link.springer.com/content/pdf/10.1007%2FJHEP12%282012%29061.pdf

Rikkert Frederix, Stefano Frixione. Merging meets matching in MC@NLO, Journal of High Energy Physics, 2012, 61, DOI: 10.1007/JHEP12(2012)061