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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* Update the Durham / Les Houches BSM Tools repository
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Proceedings:
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* Are all interesting models currently implemented?
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Contributions where we have a draft already in the repository are in '''bold face'''.
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* FeynRules & LanHEP; implementation of arbitrary models as an evolution of the BSM-LHEF.
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* QNUMBERS developments. 
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* Discussion (accord?) on how experiments and theory might best interact on new model testing
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* Possible training session on how to go from a model to event generation with new tools.
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* Impact of tunes on new physics searches (see tuning above).
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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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= Matching =
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=== Interfaces ===
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== Benchmarks for Matching (Sessions 1 & 2) ==
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* '''L. Lonnblad. LHEF v2. (12p)'''
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* Experimental Benchmarks
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* J. Huston, F.-P. Schilling, P. Uwer. J.Weng NLO ROOT tuples. --> to NLO ML group.
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* Theoretical Benchmarks / Pathological Observables
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* '''S. Plaetzer. Merging Interface. (5p)'''
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* New Physics Benchmarks?
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* '''F. Mahmoudi et al STATUS OF THE FLAVOUR LES HOUCHES ACCORD'''
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== With NLO/Multileg (Session 1) ==
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=== Tuning ===
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* Multileg Matching at NLO, state of the field
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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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* What is needed for automating NLO matching?
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=== Beyond Fixed Order ===
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* Parton Showers as Phase Space Generators
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* '''R. Chierici, E. Maina. MPI in top (5p)'''
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* Matching at NNLO ?
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* '''S. Weinzierl, Theory Tests. (3p)'''
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* Things to be learned from exploring matching in N=4 SYM, etc?
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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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== Matching beyond Fixed Order (Session 1) ==
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* '''M. Grazzini et al Higgs boson production via gluon fusion at the LHC: A comparative study.
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* In High-Energy Limit (low-x)
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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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* Influence of UE on matching
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=== Detectors ===
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* ...
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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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== Jet Clustering Parameters for Matching ==
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=== Jets ===
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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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* '''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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== Automated Matching for BSM Processes (Session 2) ==
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=== Beyond the Standard Model ===
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* '''A. Djouadi, J. Kalinowski, M. Muehlleitner and M. Spira AN UPDATE OF THE PROGRAM HDECAY'''
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= Parton Densities =
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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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== PDFs in Monte Carlos (Session 1) ==
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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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* Exploring the LO* PDFs, are we ready to use them for production?
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'''EXP:''' J. Butterworth (ATLAS - University College London, UK), F. Moortgat (CMS - ETH Zurich, Switzerland)
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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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----
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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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