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ZU-TH-11-12
SLAC-PUB-15190
IPPP-12-51
DCPT-12-102
LPN12-080
MCNET-12-08
FR-PHENO-2012-018
arXiv:1207.5031
JHEP 1301 (2013) 144

by: Gehrmann, Thomas (Zurich U.) et al.

Abstract:
We present a new approach to combine multiple NLO parton-level calculations matched to parton showers into a single inclusive event sample. The method provides a description of hard multi-jet configurations at next-to leading order in the perturbative expansion of QCD, and it is supplemented with the all-orders resummed modelling of jet fragmentation provided by the parton shower. The formal accuracy of this technique is discussed in detail, invoking the example of electron-positron annihilation into hadrons. We focus on the effect of renormalisation scale variations in particular. Comparison with experimental data from LEP underlines that this novel formalism describes data with a theoretical accuracy that has hitherto not been achieved in standard Monte Carlo event generators.
Link: 
http://inspirehep.net/record/1123388
Publ date: 
Saturday, July 21, 2012 - 23:00