Tools and Monte Carlo

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Tools/MC Conveners:
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The Tools/MC Group spans both Les Houches sessions. To minimize confusion, each session has been assigned its own wiki page;
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'''TH:''' F. Maltoni (Louvain, Belgium),  P. Richardson (IPPP, Durham, UK), S. Schumann (Heidelberg, Germany), P. Skands  (Fermilab, USA).
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'''EXP:''' J. Butterworth (ATLAS - UC London, UK), F. Moortgat (CMS - ETH Zurich, Switzerland)
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= Monte Carlos and Tuning =
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= Tentative Proceedings Table of Content (120p total) =
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* For Matching issues: see under '''Matching'''
 
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* For PDF issues: see under '''Parton Densities'''
 
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* For QCD radiation patterns and New Showers: see under '''Jets and Energy Flows'''
 
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== Validity of tunes and Uncertainty Bands (Sessions 1 & 2) ==
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We have assembled the combined document in [https://cvs.hep.ucl.ac.uk/trac/LesHouchesMC09 this repository]. If you would like direct access to this repository, please see the instructions on the link. If you prefer to work independently, that's fine, just use the templates properly and mail your contributions to the conveners.
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* Automated Tuning: Rivet & Professor (Session 1)
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* Can we define regions of validity for the physics implemented in the MC? e.g. What about small x, high rapidity effects (Session 1)
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* Can we obtain credible uncertainty bands with existing tools, or are new methods needed (Session 1)
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* Impact of tunes on new physics searches (Session 2)
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* Maybe we can produce "Demystifying Tuning: A Les Houches Guide to Tuning?" (Session 1)
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== Tuning in the presence of matching (Session 1) ==
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== Both Sessions ==
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* Chart the problem. Determine some Classic Examples.
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* How dependent on matching strategy?
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* Are there ways of revamping pre-matched tunes?
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* Influence of UE on matching
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Wiki pages: <br>
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'''[[Tools and Monte Carlo Session 1 (SM)]]'''<br>
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'''[[Tools and Monte Carlo Session 2 (BSM)]]'''<br>
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= BSM Monte Carlo (Session 2) =
 
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== Existing Codes and Implementations ==
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Proceedings:
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* Update the Durham / Les Houches BSM Tools repository
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Contributions where we have a draft already in the repository are in '''bold face'''.
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* Are all interesting models currently implemented?
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== BSM-LHEF ==
 
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* Implementation status (QNUMBERS).
 
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* Implementation of arbitrary models as an evolution of the BSM-LHEF. LanHEP, FeynRules.
 
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== Common non-susy BSM scenario and benchmark points (Session 2) ==
 
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* Define & generate some benchmark common data sets?
 
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* Discussion (accord?) on how experiments and theory might best interact on new model testing
 
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* Impact of tunes on new physics searches (see tuning above).
 
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== Flavour Les Houches Accord (Session 2) ==
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=== Interfaces ===
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* With Tools WG of Flavor/LHC workshops. Model independent parametrization of flavor related quantities such as Wilson coefficients, exp. results, etc. Modify existing SLHA "structure" to host this accord? '''S. Heinemeyer''', '''N. Mahmoudi'''.
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== Training ==
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* '''L. Lonnblad. LHEF v2. (12p)'''
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* Possible training session on how to go from a model to event generation with new tools.
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* J. Huston, F.-P. Schilling, P. Uwer. J.Weng NLO ROOT tuples. --> to NLO ML group.
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= Matching =
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* '''S. Plaetzer. Merging Interface. (5p)'''
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== Benchmarks for Matching (Sessions 1 & 2) ==
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* '''F. Mahmoudi et al STATUS OF THE FLAVOUR LES HOUCHES ACCORD'''
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* Experimental Benchmarks
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=== Tuning ===
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* Theoretical Benchmarks / Pathological Observables
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* '''Rivet/Professor status and important data sets for tuning A. Buckley et al., (5p)'''
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* '''Towards uncertainty bands on MC tunes A. Buckley et al., (5p)'''
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* '''Tuning in the presence of matching P. Lenzi et al., (5p)'''
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* New Physics Benchmarks?
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=== Beyond Fixed Order ===
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== With NLO/Multileg (Session 1) ==
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* '''R. Chierici, E. Maina. MPI in top (5p)'''
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* Multileg Matching at NLO, state of the field
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* '''S. Weinzierl, Theory Tests. (3p)'''
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* What is needed for automating NLO matching?
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* '''D.Majumder, K. Mazumdar, T. Sjostrand A Matching scheme for Wgamma NLO ME generator and pythia parton shower'''
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* Parton Showers as Phase Space Generators
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* '''M. Grazzini et al Higgs boson production via gluon fusion at the LHC: A comparative study.
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* Matching at NNLO ?
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* '''J. M. Butterworth, F. Cordero, G. Piaquadio, L. Reina, D. Wackeroth., Wbb in the high pT HW region'''
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* Things to be learned from exploring matching in N=4 SYM, etc?
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=== Detectors ===
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== Matching beyond Fixed Order (Session 1) ==
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* '''DELPHES  S. Ovyn, X. Rouby'''
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* '''G. Hesketh et al., Experimental Definitions of Electron isolation (5p)'''
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* In High-Energy Limit (low-x)
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=== Jets ===
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* Influence of UE on matching
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* '''J. Butterworth, M. Schwarz, Jet substructure review (5p)'''
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* '''K. Hamilton et al., MC issues for jet substructure (5p)'''
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* '''P. Loch, P. Francavilla, Detector issues for jet substructure (5p)'''
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* '''M. Campanelli, J. Monk, J. Robinson, C. Taylor, A study of radiation between jets at the LHC '''
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* M. Campanelli, P.Francavilla, P.Loch, J. Andersen et. al., A SIMPLE RADIATION PATTERN IN HARD MULTI-JET EVENTS IN ASSOCIATION WITH A WEAK BOSON --> to NLO ML group
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* ...
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=== Beyond the Standard Model ===
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== Jet Clustering Parameters for Matching ==
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* '''A. Djouadi, J. Kalinowski, M. Muehlleitner and M. Spira AN UPDATE OF THE PROGRAM HDECAY'''
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* Possible to agree on Standard for describing, e.g. in Les Houches Event Files, properties and cuts used in ME generation that subsequent matching steps based on jet clustering would need to know about?
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* '''L. Basso, F. Braam, C. Duhr, B. Fuks, A. Martin,  J. Reuter, T. Roy, S. Schumann IMPLEMENTATION AND VALIDATION OF MODELS BEYOND THE STANDARD MODEL WITH FEYNRULES'''
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== Automated Matching for BSM Processes (Session 2) ==
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Tools/MC Conveners:
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'''TH:''' F. Maltoni (Louvain, Belgium),   P. Richardson (IPPP, Durham, UK), S. Schumann (Heidelberg, Germany), P. Skands (Fermilab, USA).<br>
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'''EXP:''' J. Butterworth (ATLAS - University College London, UK), F. Moortgat (CMS - ETH Zurich, Switzerland)
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= Parton Densities =
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== PDFs in Monte Carlos (Session 1) ==
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* Exploring the LO* PDFs, are we ready to use them for production?
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* Uncertainty Bands for the LO* PDFs
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* PDFs and their interaction with MC tuning
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* Pythia 8 - Advantages/disadvantages of using one PDF for hard scattering ME (best cross section?) and another for evolution (universal tuning?)
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== Beyond LO* (Session 1 & 2) ==
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* Are PDFs ready for NLO/Multileg WG? (Session 1)
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* Electroweak and QCD in PDFs (Session 1)
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* BSM effects in PDFs (Session 2)
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= Jets and Energy Flows =
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== Jet Substructure (Sessions 1 & 2) ==
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* Boosted hadronic decays of massive particles (W,Z,Top,H,BSM...)
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== QCD radiation patterns (Session 1) ==
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* rapidity gap definitions
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* colour flow and energy flow, coherence
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* QCD radiation patterns as a tool for reducing combinatorials in top, higgs, BSm searches...
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* Lessons from the new generation of parton showers
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== New Jet Algorithms (Sessions 1 & 2) ==
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== Jet Calibration ==
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* what truth do we calibrate to? (see last Les Houches for accord on final states)
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Current revision

The Tools/MC Group spans both Les Houches sessions. To minimize confusion, each session has been assigned its own wiki page;

Contents

Tentative Proceedings Table of Content (120p total)

We have assembled the combined document in this repository. If you would like direct access to this repository, please see the instructions on the link. If you prefer to work independently, that's fine, just use the templates properly and mail your contributions to the conveners.

Both Sessions

Wiki pages:
Tools and Monte Carlo Session 1 (SM)
Tools and Monte Carlo Session 2 (BSM)


Proceedings: Contributions where we have a draft already in the repository are in bold face.


Interfaces

  • L. Lonnblad. LHEF v2. (12p)
  • J. Huston, F.-P. Schilling, P. Uwer. J.Weng NLO ROOT tuples. --> to NLO ML group.
  • S. Plaetzer. Merging Interface. (5p)
  • F. Mahmoudi et al STATUS OF THE FLAVOUR LES HOUCHES ACCORD

Tuning

  • Rivet/Professor status and important data sets for tuning A. Buckley et al., (5p)
  • Towards uncertainty bands on MC tunes A. Buckley et al., (5p)
  • Tuning in the presence of matching P. Lenzi et al., (5p)

Beyond Fixed Order

  • R. Chierici, E. Maina. MPI in top (5p)
  • S. Weinzierl, Theory Tests. (3p)
  • D.Majumder, K. Mazumdar, T. Sjostrand A Matching scheme for Wgamma NLO ME generator and pythia parton shower
  • M. Grazzini et al Higgs boson production via gluon fusion at the LHC: A comparative study.
  • J. M. Butterworth, F. Cordero, G. Piaquadio, L. Reina, D. Wackeroth., Wbb in the high pT HW region

Detectors

  • DELPHES S. Ovyn, X. Rouby
  • G. Hesketh et al., Experimental Definitions of Electron isolation (5p)

Jets

  • J. Butterworth, M. Schwarz, Jet substructure review (5p)
  • K. Hamilton et al., MC issues for jet substructure (5p)
  • P. Loch, P. Francavilla, Detector issues for jet substructure (5p)
  • M. Campanelli, J. Monk, J. Robinson, C. Taylor, A study of radiation between jets at the LHC
  • M. Campanelli, P.Francavilla, P.Loch, J. Andersen et. al., A SIMPLE RADIATION PATTERN IN HARD MULTI-JET EVENTS IN ASSOCIATION WITH A WEAK BOSON --> to NLO ML group

Beyond the Standard Model

  • A. Djouadi, J. Kalinowski, M. Muehlleitner and M. Spira AN UPDATE OF THE PROGRAM HDECAY
  • L. Basso, F. Braam, C. Duhr, B. Fuks, A. Martin, J. Reuter, T. Roy, S. Schumann IMPLEMENTATION AND VALIDATION OF MODELS BEYOND THE STANDARD MODEL WITH FEYNRULES

Tools/MC Conveners: TH: F. Maltoni (Louvain, Belgium), P. Richardson (IPPP, Durham, UK), S. Schumann (Heidelberg, Germany), P. Skands (Fermilab, USA).
EXP: J. Butterworth (ATLAS - University College London, UK), F. Moortgat (CMS - ETH Zurich, Switzerland)

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