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Sökning: WFRF:(Frixione S.)

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1.
  • Alwall, J., et al. (författare)
  • A standard format for Les Houches Event Files
  • 2007
  • Ingår i: Computer Physics Communications. - : Elsevier BV. - 0010-4655. ; 176:4, s. 300-304
  • Tidskriftsartikel (refereegranskat)abstract
    • A standard file format is proposed to store process and event information, primarily output from partoti-level event generators for further use by general-purpose ones. The information content is identical with what was already defined by the Les Houches Accord five years ago, but then in terms of Fortran commonblocks. This information is embedded in a minimal XML-style structure, for clarity and to simplify parsing.
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2.
  • Frederix, R., et al. (författare)
  • On the reduction of negative weights in MC@NLO-type matching procedures
  • 2020
  • Ingår i: Journal of High Energy Physics. - 1126-6708. ; 2020:7
  • Tidskriftsartikel (refereegranskat)abstract
    • We show how a careful analysis of the behaviour of a parton shower Monte Carlo in the vicinity of the soft and collinear regions allows one to formulate a modified MC@NLO-matching prescription that reduces the number of negative-weight events with respect to that stemming from the standard MC@NLO procedure. As a first practical application of such a prescription, that we dub MC@NLO-∆, we have implemented it in the MadGraph5_aMC@NLO framework, by employing the Pythia8 Monte Carlo. We present selected MC@NLO-∆ results at the 13 TeV LHC, and compare them with MC@NLO ones. We find that the former predictions are consistent with the latter ones within the typical matching systematics, and that the reduction of negative-weight events is significant.
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