ATLAS Standard Model Workshop 2018 (External)

5 Sept 2018, 08:00 → 7 Sept 2018, 14:00 Europe/London

London

The workshop program will be devoted to review our first 13 TeV measurements and prepare ourselves for our full Run 2 high precision legacy papers. We also want to exploit synergies with other ATLAS physics groups as much as possible and encourage common analysis strategies where it is beneficial to maximize the scientific output. A particular focus will be placed on constrains of effective field theories, our interplay with the Higgs- and Top-Working groups as well as reinterpretations of SM measurements in BSM scenarios.

The Wednesday sessions will be dedicated to ATLAS internal  presentations and discussions. Two morning sessions, on Thursday and Friday, will be dedicated to discussions between experiment and theory.

On Thursday afternoon we will visit a Shakespeare play, followed by the workshop dinner.

The early registration period ends on July 8th. Within this period, the registration fee is £160. On-campus accommodations with toilet and shower for £59 per person and day can be booked via the registration fee payment procedure.

The late registration period is from July 9th -July 30th.   In this period, the registration fee will be increased to £180 and on-campus accommodations will not be available anymore. 

See you in September!

 

Wednesday, 5 September

09:30 → 09:45 Welcome to London

10:00 → 18:00 ATLAS Internal

18:00 → 18:15 Tea break

18:15 → 19:15 Public Talks: Overview of Public Standard Model Measurements

Speaker: Elena Yatsenko (Shanghai Jiao Tong University (CN) & Tsung-Dao Lee Institute (CN))

19:15 → 20:45 Reception

Thursday, 6 September

08:45 → 12:55 News from Theory

Conveners: Matthias Schott (Johannes-Gutenberg-Universitaet Mainz (DE)), Simone Amoroso (Deutsches Elektronen-Synchrotron (DE))

08:45 Latest theory news and prospects on Jet-Substructure (30+10)

Speaker: Mrinal Dasgupta (University of Manchester (GB))

09:25 BSM physics and reinterpretation of measurements (30+10)

Speaker: Riccardo Torre (CERN)

10:05 Tea Break

10:35 Correlations between different color-singlet processes (30+10)

Speaker: Frank Tackmann (Deutsches Elektronen-Synchrotron (DE))

11:15 Latest developments on Monte Carlo Generators (30'+10')

Speaker: Keith Hamilton (University College London (GB))

11:55 EFT in the context of SM measurements (30'+10')

Speaker: Tevong You (University of Cambridge)

13:00 → 17:00 Excursion - Shakespeare

17:10 → 17:30 Coffee break

17:45 → 18:45 Theory Panel

What is the best channel or method to search for the Odderon?

In PDF fitting we have been finding that fixed-order predictions are not always adequate. For example, to describe high-precision data which is not fully inclusive in that there are always necessary pt cuts. To what extent will resummed calculations be able to address this -and will they be available to fast grid techniques?

The new results of WW MiNLO NNLOPS imply that there are in certain regions of phase space real issues with the scale choices of the MiNLO approach which result in large reweighting factors (eg for Delta_yWW for large values of this observable). Is it true that if a scale choice is inappropriate, then NNLOPS reweighting may technically work but is by no means guaranteed to provide a result formally accurate to the claimed accuracy, even from a perturbative point of view, let alone for NNLO+PS. 

Is it really possible to formally claim NNLO+PS accuracy for LHE events before showering? Would such a statement be valid for all observables over the whole phase space of the measurements? 

Should we try to separate processes which lead to the same final state? As example: In WW production we only treat the EWK vertex as signal, while also the ttbar-process contributes (which is currently treated as background). This questions gets even more relevant when going to final states which can be produced either with pure EWK vertices (WWZ, ...) or via Higgs.

Are you aware of relevant use cases where EFT parameters relevant for signal also impact significantly the background of a different process under study?

What useful measurements beyond jet shapes could help understanding substructure and reducing its modeling uncertainties?

Are there any corners of phase space of DY production that you would like to see measured (and have not been done so far) at the LHC?

19:30 → 22:30 Workshop Dinner

Friday, 7 September

09:00 → 12:00 ATLAS Internal

12:30 → 12:50 How to improve the ATLAS Standard Model Working Group

Speaker: Matthias Schott (Johannes-Gutenberg-Universitaet Mainz (DE))

12:50 → 13:00 Workshop Closure

Speaker: Bogdan Malaescu (Centre National de la Recherche Scientifique (FR))