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NLO and parton showers miniWorkshop

chaired by Michelangelo Mangano (CERN), Paolo Nason (Univ. degli Studi Milano-Bicocca (IT)), Stefano Frixione (CERN), Fabio Maltoni (Universite Catholique de Louvain (BE))
from to (Europe/Zurich)
at CERN ( 4-3-006 - TH Theory Conference Room )
Description 
The main goal of the Workshop is to discuss the theoretical issues emerging from the development and study of event generators based on NLO matrix elements and full parton shower evolution. Among the topics to be addressed in the workshop are the following:

1) Accuracy in NLO+PS; nominal accuracy: NLO, (N)LL, leading colour limitations, etc.
2) Differences between different formulations (differences between MC@NLO and POWHEG, etc.)
3) How to estimate uncertainties in NLO+PS: 
- what to vary,
- uncertainties in the NLO implementation,
- uncertainties inherent to the shower interface,
- uncertainties inherent to the shower.
4) Validation of NLO+PS: where are we now, and alternative validation procedures.
5) future developments in NLO+PS

The Workshop will be centered on a few focused invited talks, to trigger ample and open discussions. Time permitting, we shall consider having a session with short individual contributions on other recent developments in this area.

EVO connection will be available: the link will appear on the agenda page 30' before the start of the meeting
Go to day
  • Monday, 27 February 2012
    • 09:30 - 09:50 MC@NLO vs. POWHEG, opportunities and limitations 20'
      Speaker: Stefan Hoeche (University of Zurich)
      Material: Slides pdf file
    • 10:10 - 10:30 Improving MC@NLO simulations with Catani-Seymour subtraction 20'
      Speakers: Marek Schoenherr (Technische Universitaet Dresden (DE)), Marek Schoenherr (Technische Universitaet Dresden (DE))
      Material: Slides pdf file
    • 10:50 - 11:10 NLO developments in Herwig++ 20'
      Speaker: Mr. Simon Plaetzer (ITP, Universitaet Karlsruhe)
      Material: Slides pdf file
    • 11:30 - 11:50 Coffee break
    • 11:50 - 12:10 Matrix elements merging in Pythia8 20'
      Speaker: Stefan Prestel
      Material: Slides pdf file
    • 12:30 - 12:50 aMC@NLO 20'
      Speakers: Rikkert Frederix, Rikkert Frederix (Universitaet Zuerich (CH))
      Material: Slides pdf file
    • 13:10 - 14:30 Lunch break
    • 14:30 - 14:50 A common view on MC@NLO and POWHEG generators 20'
      Speaker: Paolo Nason (Univ. degli Studi Milano-Bicocca (IT))
      Material: Slides pdf file
    • 15:10 - 18:30 Discussion Session
  • Tuesday, 28 February 2012
    • 09:00 - 09:20 Photons with POWHEG in Herwig++ 20'
      Speakers: Peter Richardson, Dr. Peter Richardson (Durham University)
      Material: Slides pdf file
    • 09:40 - 10:00 W production and decay including EW corrections in the POWHEG BOX 20'
      Speaker: Fulvio Piccinini
      Material: Slides pdf file
    • 10:20 - 10:40 Merging NLO+PS with ME+PS 20'
      Speaker: Keith Hamilton
      Material: Slides pdf file
    • 11:00 - 11:20 Coffee break
    • 11:20 - 11:40 CKKW at NLO 20'
      Speakers: Leif Lonnblad, Leif Ingvar Lonnblad (Lund University (SE))
      Material: Slides pdf file
    • 12:00 - 12:20 On the alternative to POWHEG and MC@NLO method of introducing NLO corrections to hard process -- the KRKMC methodology 20'
      Speaker: Staszek Jadach (Polish Academy of Sciences (PL))
      Material: Slides pdf file
    • 12:40 - 13:00 Interplay of IR-Improved DGLAP-CS Theory and NLO Parton Shower MC Precision 20'
      Speaker: Bennie Ward (Baylor University (US))
      Material: Slides powerpoint file pdf file
    • 13:00 - 14:00 Lunch break
    • 14:00 - 18:00 Discussion (no EVO connection)
      Location: 4-2-011 - TH common room