15th MCnet Meeting

5 Apr 2017, 08:45 → 7 Apr 2017, 17:00 Europe/Zurich

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

The 15th meeting of the MCnet network is also the kick-off meeting of the MCnetITN3 consortium, funded by the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 722104.

Wednesday, 5 April

09:00 → 12:30 MCnet Management Meeting

MCnetITN3.pdf

MCnetITN3.pptx

12:30 → 14:00 Lunch

14:00 → 15:30 CERN TH Colloquium

15:30 → 16:00 Coffee / Tea

16:00 → 18:00 Session 1

16:00 Discussion: Format for the MCnet Annual Schools

11th MCnet School

MCnetSchools.pdf

MCnetSchools.pptx

16:30 Introduction

Introductory Talk.

Speaker: Mr James Black (IPPP)

IntroductoryTalk.pdf

16:35 Heavy-ion collisions and Single Diffractive Events

TBA

Speaker: Harsh Shah (Lund University)

Harsh.pdf

16:55 Towards general purpose heavy ion generators and > microscopic collectivity

TBA - Something involving heavy ions, Work In Progress.

Speaker: Christian Bierlich (Lund University (SE))

cbierlich.pdf

18:00 → 22:00 MCnet Network Dinner - 19:30, Auberge Communale de Meyrin

Thursday, 6 April

09:00 → 10:30 Session 2

09:00 Student and Postdoc only session

Session

10:00 Automating Basis Reduction for Effective Lagrangians in FeynRules

Accounting for redundancies among higher-dimensional operators is necessary in any Effective Field Theory, and has historically been a source of confusion in its applications to the Standard Model. Even while the procedure is now well-understood, reducing an arbitrary set of operators onto an agreed basis is still a time-consuming step arising in matching a given UV completion to an EFT, and at each order in perturbation theory where this plays a key role in renormalizing the theory.

Emulating the procedure used to derive the `Warsaw' basis of the dimension-six SMEFT, work to automate this reduction will be discussed using FeynRules, with the aim of providing a tool which will be useful in SMEFT calculations and lend itself to future generalization, e.g. to the construction of operator bases for theories beyond the SM, and eliminating redundancies in operators of still higher mass dimension.

Speaker: Liam Ronald Moore (University of Glasgow (GB))

talk.pdf

10:30 → 11:00 Coffee / Tea

11:00 → 12:30 Session 3

11:00 A summary of recent ATLAS measurement useful for MC modelling improvements

TBA

Speaker: Dr Josh McFayden (University College London (UK))

2017-04-06_MCnet_mcfayden.pdf

11:30 Recursive Soft Drop

We introduce a new jet substructure method based on a recursive
iteration of the Soft Drop algorithm. The recursive soft drop
algorithm introduces an additional parameter N to define the
number of layers of soft drop declustering, providing an
optimized grooming strategy for boosted objects with (N+1)-prong
decays, as well as improved stability in high pileup
conditions. We discuss the infinite N limit, where groomed jets
have a null area, and investigate their properties. We show
promising applications to jet mass resolution in boosted top and
W bosons, and demonstrate how recursive soft drop grooming can
substantially mitigate pileup effects when used in conjunction
with existing pileup-removal methods.

Speaker: Frederic Alexandre Dreyer (MIT)

talk_mcnet15th.pdf

12:00 NLO+PS gg→ZZ→e+e−μ+μ− production with POWHEG

I will present a calculation of the next-to-leading order (NLO) QCD corrections to the hadroproduction process gg→ZZ→e+e−μ+μ−, matched to the parton shower in the POWHEG framework.

Speaker: Simone Alioli (CERN)

McNet_alioli.pdf

12:30 → 14:00 Lunch

14:00 → 15:30 Session 4: CEDAR talks

14:00 Introduction to CEDAR

Speaker: Andy Buckley (University of Glasgow (GB))

buckley-cedar+rivetbsm.pdf

14:15 Rivet overview and plans

Speaker: Chris Pollard (University of Glasgow (GB))

MCnet20170406.pdf

14:30 CONTUR overview and plans

Speaker: David Yallup (University College London)

MCNet_April_2017.pdf

14:45 Rivet for BSM reinterpretation

Speaker: Andy Buckley (University of Glasgow (GB))

15:00 Professor tuning and BSM

Speakers: Holger Schulz (Humboldt-Universitaet zu Berlin (DE)), Holger Schulz (HU Berlin)

2017-04 Schulz Talk.pdf

15:15 Heavy ion analysis requirements

Speakers: Jan Fiete Grosse-Oetringhaus (CERN), Jochen Klein (KIT - Karlsruhe Institute of Technology (DE)), Jochen Klein (CERN)

rivet4hi.pdf

15:30 → 16:00 Coffee / Tea

16:00 → 18:00 Session 5: Particle Wiki Active Editing

Particle Wiki

Friday, 7 April

09:00 → 12:30 Project meetings: HEJ:

09:00 → 12:30 Project meetings: Herwig:

09:00 → 12:30 Project meetings: Pythia

10:00 → 12:00 Project meetings: Contur

10:00 Update/changes for JHEP

In dealing with the referees comments for JHEP we found a couple of issues, which we'll discuss.

Speakers: Bjorn Sarrazin (University of Bonn (DE)), David Grellscheid, David Yallup (University College London), Jonathan Butterworth (University College London (UK))

David's talk from yesterday

10:30 Results from UCL projects

Speaker: Jonathan Butterworth (University College London (UK))

contur-mcnet.pdf

contur-mcnet.pptx

12:30 → 14:00 Lunch