Matrix Element Method at NLO for (anti-)kt-jet algorithms

Created in January 23, 2019

2019   ·   LHC   TopQuarks   ·   Paper

Matrix Element Method at NLO for (anti-)kt-jet algorithms

Authors: Manfred Kraus, Till Martini, Peter Uwer

Abstract: In this article, we present a method to calculate a posteriori event weights at next-to-leading-order (NLO) QCD accuracy for a given jet event defined by the (anti-)kt algorithm relying on the conventional \(2\to 1\) recombination. This is an important extension compared to existing Monte-Carlo tools which generate jet events together with the corresponding weight but do not allow one to calculate the weight for a given event. The method can be used to generate unweighted events distributed according to the fixed-order NLO cross section. In addition, the method allows one to calculate NLO accurate weights for events recorded by experiments. The potential of this ability is illustrated by applying the Matrix Element Method (MEM) to single top-quark events generated with POWHEG in combination with Pythia. For the first time, a systematic study of parton shower effects within the MEM is provided. The method is completely general and can be applied to arbitrary LHC processes.

(Kraus et al., 2019)

References

  1. Phys. Rev. D
    ATLAS_eventdisplay.jpg
    Matrix Element Method at NLO for (anti-)k_T-jet algorithms
    Manfred Kraus, Till Martini, and Peter Uwer
    Phys. Rev. D, 2019
    DOI arXiv
    N/A Google Scholar citations 15 InspireHEP citations


Enjoy Reading This Article?

Here are some more articles you might like to read next:

  • Measurement of the top-quark pole mass in dileptonic tt+1-jet events at sqrt(s)=13 TeV with the ATLAS experiment
  • Gravitational Bremsstrahlung in Black-Hole Scattering at O(G^3) Quadratic-in-Spin Effects
  • First Look at Quartic-in-Spin Binary Dynamics at Third Post-Minkowskian Order
  • EFTs Across The Universe
  • Spinning Black Hole Scattering at O(G^3S^2) Casimir Terms, Radial Action and Hidden Symmetry