publication . Article . Preprint . 2012

The Matrix Element Method at Next-to-Leading Order.

Campbell, John M.; Giele, Walter T.; Williams, Ciaran;
Open Access
  • Published: 19 Apr 2012 Journal: Journal of High Energy Physics, volume 2,012 (eissn: 1029-8479, Copyright policy)
  • Publisher: Springer Nature
Abstract
This paper presents an extension of the matrix element method to next-to-leading order in perturbation theory. To accomplish this we have developed a method to calculate next-to-leading order weights on an event-by-event basis. This allows for the definition of next-to-leading order likelihoods in exactly the same fashion as at leading order, thus extending the matrix element method to next-to-leading order. A welcome by-product of the method is the straightforward and efficient generation of unweighted next-to-leading order events. As examples of the application of our next-to-leading order matrix element method we consider the measurement of the mass of the Z ...
Subjects
free text keywords: Nuclear and High Energy Physics, Lepton, Matrix element, Quantum electrodynamics, Particle physics, Communication channel, Search for the Higgs boson, Perturbation theory, W and Z bosons, Physics, High Energy Physics - Phenomenology, High Energy Physics - Experiment
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