Merging meets matching in MC@NLO

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 8TeV LHC of a Standard Model Higgs in association with up to J = 2 jets, and of an e(+)nu(e) pair or a t (t) over bar pair in association with up to J = 1 jet.


Published in:
Journal Of High Energy Physics, 12
Year:
2012
Publisher:
New York, Springer
ISSN:
1126-6708
Keywords:
Laboratories:




 Record created 2013-03-28, last modified 2018-03-17


Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)