TOP LHC WG meeting

18 Apr 2013, 14:00 → 19 Apr 2013, 12:30 Europe/Zurich

4/3-006 - TH Conference Room (CERN)

Markus Cristinziani (Universitaet Bonn (DE)), Michelangelo Mangano (CERN), Roberto Chierici (Universite Claude Bernard-Lyon I (FR))

This is the third open meeting of the TOP LHC Working Group.

A vidyo connection is available.

Thursday 18 April

1 Introduction

Speaker: Roberto Chierici (Universite Claude Bernard-Lyon I (FR))

Slides TOPLHCWG_intro_042013.pdf TOPLHCWG_intro_042013.pptx

Current combinations and limitations from theoretical uncertainties

2 W helicity combination

Speaker: Kevin Alexander Kroeninger (Georg-August-Universitaet Goettingen (DE))

Slides whel.pdf

3 Top mass combination and fragmentation/hadronisation uncertainties

Speaker: Steve Wimpenny (University of California Riverside (US))

Slides Mass_Cobinations_LHCWG_5_18_13.pdf

4 Discussion time

5 Extrapolation uncertainties from single top generators

Speaker: Dominic Hirschbuehl (Bergische Universitaet Wuppertal (DE))

Slides talk.pdf

6 Discussion time

16:30 Tea break

Tools

7 Towards recommendations for a coherent treatment of jet/Etmiss related systematics

Speakers: Dr Bogdan Malaescu (Univ. P. et Marie Curie (Paris VI) (FR)), Ms Caterina Doglioni (Universite de Geneve (CH)), Mr Henning Kirschenmann (Hamburg University (DE))

Slides 18_04_2013_JESCorrelations_TopLHCWG.pdf

8 Discussion

9 A new tool for combining observables

Speaker: Kevin Alexander Kroeninger (Georg-August-Universitaet Goettingen (DE))

Slides BLUE.pdf

Friday 19 April

Cross Section

10 Pseudo top definition and common acceptance

Speakers: William Bell (Unknown), William Hamish Bell (Universite de Geneve (CH))

Slides top-fiducial-lhc-20130419.pdf

11 ttbar cross-section at NNLO

Speaker: Alexander Dimitrov Mitov (CERN)

Slides AlexanderMitov-NNLO.pdf

12 Implications of the new NNLO tt cross section and PDF fits

Speaker: Juan Rojo (INFN)

Slides rojo-topwg-pdfs.pdf

13 Discussion

10:45 Coffee break

New ideas and outlook

14 Some studies of systematics of top quark inclusive pT and eta distributions

Speaker: Michelangelo Mangano (CERN)

Slides Mangano-April.pdf

15 aMC@NLO studies: effects of NLO merging on jet gap fractions and width effects in single top t-channel

Speaker: Stefano Frixione (CERN)

Slides amcatnlo.pdf

16 Discussion

17 Next steps and discussion

Speaker: Markus Cristinziani (Universitaet Bonn (DE))

Slides MC-130419-next_steps_open_toplhcwg_.pdf MC-130419-next_steps_open_toplhcwg_.pptx