PSR14 - Parton Showers, Event Generators and Resummation 2014

10 Jun 2014, 08:00 → 12 Jun 2014, 18:00 Europe/Berlin

Johannisstrasse 4 (Münster)

At the LHC, QCD effects are crucial in the production and/or decay of the particles being measured or sought and in calculating the (often huge) backgrounds. A precise understanding of and ability to calculate QCD contributions is therefore vital to the success of the LHC. With regard to high multiplicity final states, in particular, one has two main approaches: general purpose Monte Carlo algorithms and analytical resummation methods. The Monte Carlos try to simulate high multiplicity event in a fully exclusive way including the summation of large logarithms via the use of a parton shower. Unfortunately the accuracy of this summation is not entirely clear beyond the control of leading logarithmic terms. On the other hand analytic resummation programs make precise predictions by summing up large logarithms at least at next-to-leading logarithmic level but can be performed for a relatively small class of observables.

Tuesday 10 June

08:30 Registration

1 What do we know about NNLO computations in QCD? (1h+15')

Speaker: Kirill Melnikov

Slides muenster.pdf

10:15 Coffee break

2 Jets in pp at NNLO (25'+5')

Speaker: Joao Pires

Slides pires.pdf

3 Towards the Higgs Cross-Section at N3LO (25'+5')

Speaker: Bernhard Mistlberger

Slides PSR14-Mistlberger.pdf

4 Higgs production in gluon fusion beyond NNLO (25'+5')

Speaker: Marco Bonvini

Slides bonvini_PSR14.pdf

12:15 Lunch break

5 An overview of recent developments in resummation (1h+15')

Speaker: Eric Laenen

Slides Resummation.pdf

15:15 Coffee break

6 Resummation of ET in Higgs boson production (25'+5')

Speaker: Andreas Papaefstathiou

Slides ETresum_PSR2014.pdf

7 Jet substructure on the back of an envelope (25'+5')

Speaker: Mrinal Dasgupta

Slides muenster_mrinal.pdf muenster_mrinal.pptx

8 Coulomb gluons and the ordering variable (25'+5')

Speaker: Jeff Forshaw

Slides Muenster_forshaw.pdf

9 Glauber Gluons and Multiple Parton Interactions (25'+5')

Speaker: Jonathan Gaunt

Slides PSR14_talkGaunt.pdf

17:45 Reception

Wednesday 11 June

10 Parton showers: overview (1h+15')

Speaker: Marek Schoenherr

Slides MarekSchoeneherr_PS.pdf

10:15 Coffee break

11 Deductor: a parton shower generator (25'+5')

Speaker: Zoltan Nagy

Slides ShowersDESY2014.pdf

12 Summing Large-N Towers in Colour Flow Evolution (25'+5')

Speaker: Simon Plätzer

Slides platzer.pdf

13 Progress on multiplet bases (25'+5')

Speaker: Malin Sjödahl

Slides Munster1406MalinSjodahl.pdf

12:15 Lunch break

14 Matching: overview (1h+15')

Speaker: Leif Lönnblad

Slides PSR14.pdf

15:15 Coffee break

15 Matching and merging in Sherpa (25'+5')

Speaker: Marek Schönherr

Slides MarekSchoenherr_MEPSNLO.pdf

16 Fixed order + parton showers (25'+5')

Speaker: Stefan Prestel

Slides talk20140611.pdf

17 Matching NLO with parton shower in Monte Carlo scheme (25'+5')

Speaker: Andrzej Siodmok

Slides siodmok-munster14.pdf

18 Powheg+Pythia8 matching studies (25'+5')

Speaker: Deepak KAR

Slides dkar_psr14_upload.pdf

19:00 Workshop dinner

Thursday 12 June

Young researchers' contributions

19 QCD corrections to the electroweak top-pair production beyond the Standard Model (13'+2')

Speaker: Jezo, Tomas

Slides Jezo_PSR14.pdf

20 Resummation probed by Parton Showers in Drell-Yan + Jets (13'+2')

Speaker: Samantha Dooling

Slides dooling_DYjets.pdf

21 Approximate next-to-next-to-leading corrections to hadronic jet production (13'+2')

Speaker: Felix Ringer

Slides Ringer_Muenster.pdf

22 Geneva: status and developments (25'+5')

Speaker: Simone Alioli

Slides Alioli_PSR2014.pdf

23 A general framework to combine NNLO calculations with parton showers (25'+5')

Speaker: Christian Bauer

Slides BauerNNLO.pdf

10:45 Coffee break

24 Summary and wrap-up discussion (1h+30')

Speaker: George Sterman

Slides sterman-psr-2014.pdf