Les Houches 2019:groups:tools

2019:groups:tools:adl

anonymous@undisclosed.example.com (Anonymous) — Tue, 14 Jan 2020 18:01:11 +0000

` Analysis Description Language (ADL) Develop a domain-specific language capable of describing the contents of an LHC analysis in a standard and unambiguous way. Link to Sezen's presentation HSF Gitter forum for discussions: ADL-related projects/discussions in Les Houches:

2019:groups:tools:contur

anonymous@undisclosed.example.com (Anonymous) — Sat, 22 Jun 2019 11:17:15 +0000

Contur Sign up here if you are interested in getting Contur/Rivet running yourself.

2019:groups:tools:correlations

anonymous@undisclosed.example.com (Anonymous) — Thu, 27 Jun 2019 17:10:21 +0000

Study: correlations between signal regions Members: Sophie, Wolfgang, Humberto, Benj, Andy, Sabine, Sezen Problem statement: to identify pairs of signal regions of the analyses in the PAD database that can safely be treated as approximately uncorrelated.

2019:groups:tools:dilep

anonymous@undisclosed.example.com (Anonymous) — Thu, 27 Jun 2019 14:31:36 +0000

Dilepton mass spectrum interference: beyond the bump-hunt Members: Andy B, Tetiana H, David Y, Bill M, Richard R, Yang Bai, Louie C The rivet and contur implementation of this is discussed on this page. Idea is to investigate whether interference “dips

2019:groups:tools:gghz

anonymous@undisclosed.example.com (Anonymous) — Sun, 16 Jun 2019 17:26:40 +0000

This is a project that involves some MC authors and interested people from ATLAS/CMS. The wiki page is here

2019:groups:tools:interop

anonymous@undisclosed.example.com (Anonymous) — Fri, 28 Jun 2019 13:33:03 +0000

Reinterpretation tool interoperability Members: Ben F, Andy B, Philippe G, Anders K, Roberto R, Tomas G, Sabine K, Nishita D. * Common subset API for BSM analysis -- take best parts of MA5, Rivet, ColliderBit, CheckMATE, ... * Brainstorming document at

2019:groups:tools:isr_ps

anonymous@undisclosed.example.com (Anonymous) — Sun, 23 Jun 2019 22:56:28 +0000

Self-consistency of initial-state backward evolution Aim The aim of this project is to continue the series of projects on defining/assessing parton shower variations in Les Houches. This time, we hope to investigate some details of initial-state backward evolution.

2019:groups:tools:likelihoods

anonymous@undisclosed.example.com (Anonymous) — Fri, 26 Jul 2019 12:05:15 +0000

Likelihood construction and applications Members: Andy B, Ben F, Kar D, David Y, Louie C, Sabine Analysis combination: * subsets of compatible SRs * automatic determination of (approximate) orthogonality -- maybe using shared samples * Demonstration of systematic correlation between analyses from SM uncertainty breakdowns (DY, LC)

2019:groups:tools:llp

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Jun 2019 11:35:40 +0000

Long-lived particle recasting Members: Andy B, Ben F, Richard R, Sophie W, Nishita D, Humberto R-G, Juhi Dutta, Sabine K., Sezen, .. * Displaced leptons in Delphes / fastsims * Displaced jets? * Fiducial definitions for closer approach to reco signatures (e.g. vertex cuts on jet constituents, geometrics of jet reco)

2019:groups:tools:mcvariation1

anonymous@undisclosed.example.com (Anonymous) — Thu, 10 Oct 2019 22:35:35 +0000

MC variation I Project aim: The idea of the project was an introduction into what parameter variations are possible in General-Purpose MCs, and to help build intuition on which of these variations can affect which measurements. Minutes of the discussion on site have been posted on the slack channel. It was also suggested that the discussion can continue between MC developers at the upcoming MCnet meeting.

2019:groups:tools:mcvariation2

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Jun 2019 17:12:13 +0000

MC variation II Project aim: * consider 1 case study, pick a selection of 2-3 observables, perform a selection of MC variations * for a given setup X=(FO/matching/merging accuracy, PS model, NP model), produce envelope * check if the envelope from setup X behaves as expected or not: for instance, it might happen that even in a region that should be dominated by

2019:groups:tools:mlgenerativemodels

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Jun 2019 10:37:28 +0000

ML: Generative model projects See participants only page

2019:groups:tools:mlregression

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Jun 2019 10:38:47 +0000

Machine Learning: Regression and classification See protected pages

2019:groups:tools:negweights

anonymous@undisclosed.example.com (Anonymous) — Tue, 18 Jun 2019 12:30:54 +0000

Negative weights Project aim: * in cases where the large fraction of negative-weighted events becomes a bottleneck for LHC analysis, is it possible to find a method to optimize the choice of events that are really needed to be passed to the detector simulation in order to get a physically correct result ? Some ideas have been discussed here in LH

2019:groups:tools:prelh

anonymous@undisclosed.example.com (Anonymous) — Sun, 16 Jun 2019 18:04:13 +0000

* ttbar: mismodeling of top pt and spin correlations. There are tensions between ATLAS and CMS in top distributions. Other variables to look at? Dedicated study performed by MC authors, comprehensive of main uncertainties. * W-mass and precise EW measurements: where are the bottlenecks? Is the specific ATLAS W-mass tune working well for all observables (y_Z)?

2019:groups:tools:prelhbsm

anonymous@undisclosed.example.com (Anonymous) — Thu, 20 Jun 2019 21:28:38 +0000

BSM Tools/MC ideas before Les Houches Please add to this list of potential topics, in as much detail as you wish. The conveners will use this information to plan the main activity areas in advance of the LH meeting: * Recasting tools: comparisons, complementarity, and interoperability. Common steering, Rivet/MG5 integration

2019:groups:tools:recastcmp

anonymous@undisclosed.example.com (Anonymous) — Tue, 14 Jan 2020 18:09:59 +0000

Recasting/fastsim comparison Members: Ben F, Andy B, Sezen S, Jon B, R. Ruiz, Anders K, Are R., Nishita D., Philippe G., Tomas G., Jack Araz * Finish comparisons on particularly leptonic channels and busy environments * Benj: The analysis is now implemented, but not yet validated, in MA5.

2019:groups:tools:recastcodecomparison

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Jun 2019 17:29:42 +0000

What is implemented in which framework? CM: Checkmate; MA5: MadAnalysis5 PAD 36 fb-1 SUSY analyses ATLAS ID arXiv Short description CM Gambit MA5 Rivet SModelS SUSY-2016-07 1712.02332 multijet + MET x x x EM, in develop

2019:groups:tools:searchmeas

anonymous@undisclosed.example.com (Anonymous) — Sat, 27 Jul 2019 15:27:19 +0000

Search/measurement compatibility and complementarity Members: Andy B, Ben F, Jon B, David Y, Anders K, Kar, D, Sanmay Ganguly, M. van Beekveld, Are R., Juhi Dutta, Tomas G, Priscilla P, Tomas G., Tanya B., Roberto Ruiz General idea is to look at how the sensitivity of measurements compares to that of searches. Are they compatible where they overlap? Are there regions of complementarity?

2019:groups:tools:start

anonymous@undisclosed.example.com (Anonymous) — Thu, 25 Jul 2019 12:28:27 +0000

Les Houches 2019 Tools and Monte-Carlo Working Group * List of Participants (Accessible only to registered participants) * Present in Les Houches in session 1 * Present in Les Houches in session 2 * The Global List including all registered participants for Tools and MC Session 1 * intro talk: [ PDF ] * ideas before LH * summary TH: Project pages * Jet activity in VBF Z and VBF W events * MC variation ("compendium") * MC variation ("case study") * …

2019:groups:tools:ttbb

anonymous@undisclosed.example.com (Anonymous) — Tue, 18 Jun 2019 12:31:34 +0000

ttbb: impact of PS on region with 2 b-jet Project aim: * understand to which extent the N_{bjet}=2 region is sensitive to extra b partons generated by the PS (when the simulation starts from a generator which has ttbb in the ME). * compare also with a LO merging for ttbb+jets where also the ttbbbb region is covered by the exact ME.

2019:groups:tools:ttv

anonymous@undisclosed.example.com (Anonymous) — Thu, 27 Jun 2019 11:01:26 +0000

This is a project that was discussed in a MC/Tools meeting. As far as TH is concerned, it probably belongs naturally to the NLM groups, but since it's relevant for Higgs physics, the wikipage is here Interested parties: Josh McFayden, Christian, Enrico, Marek

2019:groups:tools:vbf

anonymous@undisclosed.example.com (Anonymous) — Thu, 26 Sep 2019 23:02:18 +0000

Jet activity in VBF W events Goal: compare Monte-Carlo predictions for the jet activity in the rapidity gap in VBF vector boson production People involved; Paolo Azzurri, Kenneth Long, Vitaliano Ciulli, Stefan Prestel, Lorenzo Viliani, Mathieu Pellen, Giovanni Pelliccioli, Christopher Schwan, Aram Apyan, Christian Reuschle, Jeppe R. Andersen, Leif Gellersen, Yacine Haddad, Carlo Pandini (mainly interested in following the background part of the study), Enrico Bothmann

2019:groups:tools:vbswz

anonymous@undisclosed.example.com (Anonymous) — Mon, 17 Jun 2019 12:24:29 +0000

Diboson QCD background in VBS topology selection Goal: study Monte-Carlo predictions for the QCD diboson background in VBS topology People involved; Jeppe Andersen, Aram Apyan, Paolo Azzurri, Kenneth Long, Vitaliano Ciulli, Stefan Prestel, Lorenzo Viliani, Mathieu Pellen, Giovanni Pelliccioli,