17th MCnet Meeting

10 Apr 2018, 08:45 → 12 Apr 2018, 17:00 Europe/Zurich

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

The 17th meeting of the MCnet network is also the third 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.

Tuesday, 10 April

09:00 → 12:30 MCnet Management Meeting - coffee break approx 10.30am

12:30 → 14:00 Lunch

14:00 → 18:00 MCnet Individual Project Meetings: Cedar/Rivet/Contur

Project meetings for Herwig, Pythia, Sherpa, and Cedar/Rivet/Contur

To find the videoconference rooms in this genius indico interface, click on "Videoconference Rooms" in the left menu and then go through to the appropriate room...

auto join url for the cedar vidyo room

14:05 CEDAR overview

Speakers: Andy Buckley (University of Glasgow (GB)), Jonathan Butterworth (University College London (UK))

MCnet CEDAR 2018-04.pdf

14:35 ATLAS feedback

Speaker: Christian Gutschow (University College London (UK))

cg_rivetMcNetApr18.pdf

14:55 CMS feedback

Speakers: Markus Seidel (CERN), Xavier Janssen (University of Antwerp (BE))

rivet_mcnet_mseidel.pdf

15:05 LHCb feedback

Speakers: Alex Grecu (IFIN-HH (RO)), Gloria Corti (CERN)

MCNet-17_LHCb_feedback_v1.0.pdf

15:15 Recasting: logistics, standards, data flow, ...

Speakers: Andy Buckley (University of Glasgow (GB)), Lukas Alexander Heinrich (New York University (US)), Zachary Louis Marshall (University of California Berkeley (US))

buckley-hepdatabsm.pdf

ReinterpretationWorkshopHepData.pdf

15:45 Recasting: Contur

Speakers: David Yallup (University College London), Jonathan Butterworth (University College London (UK))

contur_MCnet.pdf

16:05 ALICE feedback

Speaker: Przemyslaw Karczmarczyk (Warsaw University of Technology (PL))

2018.04.10_17thMCnetMeeting.pdf

16:25 Heavy Ion analysis & MC discussion

Speakers: Christian Bierlich (Lund University (SE)), Leif Lönnblad (Lund University (SE))

cbierlich.pdf

14:00 → 18:00 MCnet Individual Project Meetings: Herwig

Project meetings for Herwig, Pythia, Sherpa, and Cedar/Rivet/Contur

To find the videoconference rooms in this genius indico interface, click on "Videoconference Rooms" in the left menu and then go through to the appropriate room...

auto join url for the cedar vidyo room

14:00 → 18:00 MCnet Individual Project Meetings: Pythia

Project meetings for Herwig, Pythia, Sherpa, and Cedar/Rivet/Contur

To find the videoconference rooms in this genius indico interface, click on "Videoconference Rooms" in the left menu and then go through to the appropriate room...

auto join url for the cedar vidyo room

14:00 → 18:00 MCnet Individual Project Meetings: Sherpa

Project meetings for Herwig, Pythia, Sherpa, and Cedar/Rivet/Contur

To find the videoconference rooms in this genius indico interface, click on "Videoconference Rooms" in the left menu and then go through to the appropriate room...

auto join url for the cedar vidyo room

18:00 → 18:45 Informal General Meeting Opener - R1 Coffee area

Wednesday, 11 April

09:00 → 11:00 Open Session with LHC Experiments - including status reports of MCnet projects/generators

MCnetITN3ShortIntro.pdf

MCnetITN3ShortIntro.pptx

09:00 Sherpa

Speaker: Frank Martin Krauss (University of Durham (GB))

MCnet18.pdf

09:15 CMS

Speaker: Kenneth Long (University of Wisconsin Madison (US))

Long_MonteCarloInCMS_2018_04_11.pdf

09:30 Herwig

Speaker: Johannes Bellm (Lund)

18_4__11_Herwig_Overview_MCnet.pdf

09:45 Alice

Speaker: Redmer Alexander Bertens (Nikhef National institute for subatomic physics (NL))

MC usage in ALICE.pdf

10:00 Madgraph

Speaker: Olivier Mattelaer (UCLouvain)

18_04_10_MG5_MCnet.pdf

10:15 ATLAS

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

2018-04-11_MCNet_ATLAS_mcfayden.pdf

10:30 Pythia

Speaker: Leif Lönnblad (Lund University (SE))

CERN18a.pdf

11:00 → 11:30 Coffee / Tea

11:30 → 12:30 Open Session with LHC Experiments - including status reports of MCnet projects/generators (continued)

11:30 LHCb

Speaker: Philip Ilten (University of Birmingham (GB))

ilten.pdf

11:45 Plugin/HEJ

Speakers: Marian Heil (IPPP), Jeppe Rosenkrantz Andersen (IPPP, University of Durham (UK))

praes.pdf

12:00 CLIC/ILC - linear e+e- machines

Speaker: Ulrike Schnoor (CERN)

UlrikeSchnoor_LinearColliders.pdf

12:15 Cedar

Speakers: Jonathan Butterworth (University College London (UK)), Andy Buckley (University of Glasgow (GB))

CEDAR MCnet Plenary.pdf

12:30 → 14:00 Lunch

14:00 → 15:30 TH Colloquium: joint with CERN Theory Group

Convener: Korinna Christine Zapp (LIP Laboratorio de Instrumentacao e Fisica Experimental de Part)

15:30 → 16:00 Coffee / Tea

16:00 → 18:05 MCnet Industry Partners' Talks and discussion of secondment projects

Convener: Stefan Gieseke (Karlsruhe Institute of Technology)

16:00 Introduction

Speaker: Stefan Gieseke

cern18.pdf

16:05 IBA

Speaker: Frederic Stichelbaut

MCNet Workshop 17 - FST - 11-04-2018.pdf

MCNet Workshop 17 - FST - 11-04-2018.pptx

16:35 Blue Yonder

Speaker: Michael König

17:05 d-fine

Speaker: Mark Beinker

Introducing d-fine at CERN.pdf

17:35 B12

Speaker: Vincent Boucher

MCNet_VB 2018.pdf

18:05 → 21:30 17th MCnet Dinner, 7pm The Glassbox, CERN Restaurant 1

Thursday, 12 April

09:00 → 10:00 Student & Postdoc session

10:00 → 10:30 Student Talks 1

10:00 MadDM v.3.0

We present the recently published MadDM v.3.0, now a plugin of Madgraph5_aMC@NLO.
The new release extends the capabilities of the previous versions with a dedicated module for dark matter indirect detection. MadDM is now able to generate energy spectra from dark matter annihilation, calculate cosmic rays fluxes and compare the theory predictions with the Fermi-LAT upper limits from the observation of dwarfs galaxies gamma rays. Moreover the new ‘scan mode’ functionality makes it easy to sample the parameter space of the user’s dark matter model.

Speaker: Mr Federico Ambrogi (CP3 Centre for Cosmology, Particle Physics and Phenomenology )

MCNet_FA_12-04-2018.pdf

10:20 Introduction

Speaker: Ms Joanna Huang

JHuang_MCnet_Intro.pdf

10:25 Introduction

Speaker: Mr Alan Price

intro_AlanPrice.pdf

10:30 → 11:00 Coffee

11:00 → 12:30 Student Talks 2

11:00 Introduction

Introduction as a new MCnet Ph.D. student at LU and short description of the first research project

Speaker: Ms Smita Chakraborty (Lund University)

Intro_CERN.pdf

11:05 Introduction

A short introduction about myself as a new PhD student at Lund University.

Speaker: Leif Gellersen (Lund University)

presentation.pdf

11:10 Diffraction in Pythia

Update on ongoing activities in Pyhtia.

Speaker: Ms Christine Rasmussen

mcnet_april2018_christine.pdf

11:35 Creating heavy ion events from pp events in a generator independent way

The Pythia event generator has seen a lot of progress relating to modeling heavy ion collisions, in the parton-level stacking framework known as Angantyr. Several of the ideas behind Angantyr are, however, not local to Pythia, and it is therefore possible to implement them in a generator independent way.
We present the initial version of such an implementation, which essentially allows for input from all three main generators. As this has been suggested as a topic for this years MCnet summer school tutorials, we show some suggestions to how such a tutorial can be organized, and invite for discussion.

Speaker: Christian Bierlich (Lund University (SE))

bierlich_exp.pdf

12:00 Secondary absorptive interactions in the Angantyr model

TBA

Speaker: Harsh Shah (Lund University)

april2018.pdf

12:30 → 14:00 Lunch

14:00 → 15:30 Student Talks 3

14:00 HEJ: The Path to NLL

Presenting the first set of LL corrections to sub-leading processes within W+Jets in HEJ. This adds resummation to many processes previously only matched to FO.

Speaker: James Black (IPPP)

WJNLLshort.pdf

14:20 Double Parton Distributions and Parton Showers

Double parton scattering is usually suppressed by single parton scattering. However, in some specific regions of phase-space, the differential cross-sections are comparable. Also, for a given final state, it might happen that the double parton scattering is the dominant contribution if the single parton scattering is suppressed by a higher multiplicity of couplings. For these reasons, it turns out to be necessary to include double parton scattering in event generators in order to give a better description of the data at high energy scales such as at the LHC.
Double parton scattering requires the use of double parton distributions and many efforts have been made during the last decade to produce realistic sets of those distributions, despite the lack of experimental data. In this work, we explore some directions to include those double parton distributions within the conventional partons showers.

Speaker: Baptiste Cabouat (University of Manchester)

dPDFs2.pdf

14:40 Implementing QED radiation in Vincia

Most parton showers currently work in the leading colour limit, allowing for coherent gluonic radiation through either angular ordering or the dipole/antenna formalist. For photon emission, the equivalent type of radiation in QED, there is no leading colour limit and the soft structure is more complicated. In this talk, I will discuss how we are including photonic emissions into the Vincia parton shower. I will briefly explain several available algorithms which have varying accuracy and speed.

Speaker: Rob Verheyen (Radboud University Nijmegen)

MCnet Pres.pdf

15:00 Exploring azimuthal correlations in multijet events

Following the recent measurements I did within the CMS collaboration I will bring up some still remaining open issues in closely back-to-back dijet topologies in 2- and 3-jet inclusive events. There are considerable differences observed (up to 15%) and 2- and 3-jet data is not described by any of the models considered simultaneously. Also the unexpected behavior of Madgraph interfaced with Pythia8 will be address for 4-jet inclusive topologies. Preliminary studies suggesting a not proper merging as the source of the differences will be presented. An outlook and prospects on an exhaustive phenomenological investigation to address these issues within the Lund MCnet node will also be given.

Speaker: Armando Bermudez Martinez (CMS-DESY)

MCnet_meeting.pdf

15:30 → 16:00 Coffee