A Positive-Weight Next-to-Leading Order Monte Carlo Simulation of Drell-Yan Vector Boson Production

Hamilton, Keith;Richardson, Peter;Tully, Jon
(2008) The Journal of High Energy Physics (Online) —

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Authors
  • Hamilton, KeithUCLouvain
    Author
  • Richardson, Peter
    Author
  • Tully, Jon
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Abstract
(en) The positive weight next-to-leading-order (NLO) matching scheme (POWHEG) is applied to Drell-Yan vector boson production in the Herwig++ Monte Carlo event generator. This approach consistently combines the NLO calculation and parton shower simulation, without the production of negative weight events. The simulation includes a full implementation of the truncated shower required to correctly describe soft emissions in an angular-ordered parton shower, for the first time. The results are compared with Tevatron W and Z production data and predictions for the transverse momentum spectrum of gauge bosons at the LHC presented. Comment: 27 pages
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Hamilton, K., Richardson, P., & Tully, J. (2008). A Positive-Weight Next-to-Leading Order Monte Carlo Simulation of Drell-Yan Vector Boson Production. The Journal of High Energy Physics (Online). https://doi.org/10.1088/1126-6708/2008/10/015