Summary of ATLAS MC Tools Jae Yu LHC Higgs X-sec Workshop Univ. of Freiburg Apr. 12 – 13, 2010.

Slides:

Advertisements

Similar presentations

Α s from inclusive EW observables in e + e - annihilation Hasko Stenzel.

Advertisements

Monte Carlo tuning using ATLAS data Davide Costanzo (on behalf of the ATLAS collaboration) 1MonteCarlo tuning using ATLAS data23/08/2011.

CTEQ07 Michigan May 2007 Benchmark QCD Measurements and Tools at ATLAS Craig Buttar University of Glasgow.

Maria Jose Costa, CERN DIS 2004 April 14 th -18 th 2004, Slovakia b -mass effects in 3 and 4 jets events with the DELPHI detector at LEP b u,d,s.

ATLAS measurements of jets and heavy flavor produced in association with W and Z bosons Pierre-Hugues Beauchemin on behalf of the ATLAS Collaboration Tufts.

Low-p T Multijet Cross Sections John Krane Iowa State University MC Workshop Oct , Fermilab Part I: Data vs MC, interpreted as physics Part II:

 gg→H for different MCs: uncertainties due to jet veto G. Davatz, ETH Zurich.

Les Houches 12 th June1 Generator Issues Peter Richardson IPPP, Durham University.

Event Generation with HERWIG Nick Brook University of Bristol Introduction Multiple Interactions in HERWIG Parameter Tuning B-production.

XXXIV International Symposium on Multiparticle Dynamics Alberto Cruz On behalf of the CDF collaboration.

Status Report on hbb Analysis Jyothsna Rani for the hbb group Andy, Avto, Marine, Tim, Boris All D0 Meeting 28 th January th January 2005.

Collider Physics and QCD Phenomenology Mike Seymour (based at CERN) HERWIG Monte Carlo event generator –Current version ~ frozen (bug fixes and minor new.

1 VV scattering in P-TDR (CHAPTER 13.2 Vol 2.2) A simple summary of what we intend to put in our chapter CPTweek / PRSsession 10/31/05 Sara Bolognesi (TORINO)

Monte Carlo event generators for LHC physics

Marc Sangel Supervisor: Sebastian Johnert DESY Summer Student Programm Hamburg, DESY, 02. September 2011.

W/Z + jets measurements at D0 On behalf of the DØ Collaboration N.Skachkov (JINR, Dubna)

2012 Tel Aviv, October 15, 2012 Rick Field – Florida/CDF/CMSPage 1 Rick Field University of Florida Outline of Talk CMS at the LHC CDF Run 2 

Cambridge 19 th April1 Comparisons between Event Generators and Data Peter Richardson IPPP, Durham University.

Olivier RavatLes Houches/June 3rd Higgs associated production at LHC : Thecase Olivier Ravat, Morgan Lethuillier IPN Lyon Les Houches 2003 : Physics.

AcerMC and ISR/FSR systematics at ATLAS Liza Mijovic, Borut Kersevan Jozef Stefan Inst. Univ. of Ljubljana ATLAS approach: Generator level studies Parameters.

Monica D’Onofrio University of Liverpool Boson+jets measurements at the CDF experiment "Vector boson plus jets as a signal and background“ Durham, September.

Fermilab MC Workshop April 30, 2003 Rick Field - Florida/CDFPage 1 The “Underlying Event” in Run 2 at CDF  Study the “underlying event” as defined by.

CKKW studies and other news J. Huston Michigan State University (with help from Ben Cooper and Bruce Mellado)

Workshop on Early LHC Physics May 6, 2009 Rick Field – Florida/CDF/CMSPage 1 Workshop on Early Physics Opportunities at the LHC Rick Field University of.

NLO MC Tools in ATLAS and CMS LHC Higgs Workshop Univ. of Freiburg Apr. 12 – 13, 2010 Jae Yu University of Texas at Arlington For the NLO MC group (Grateful.

QCD Physics with ATLAS Mike Seymour University of Manchester/CERN PH-TH ATLAS seminar January 25 th / February 22 nd 2005.

Models Experiment Bridging the Gap Tim Stelzer Fabio Maltoni + CP 3.

St. Andrews, Scotland August 22, 2011 Rick Field – Florida/CDF/CMSPage Rick Field University of Florida Outline  Do we need a.

High P T Inclusive Jets Study High P T Inclusive Jets Study Manuk Zubin Mehta, Prof. Manjit kaur Panjab University, Chandigarh India CMS Meeting March,

The Underlying Event in Jet Physics at TeV Colliders Arthur M. Moraes University of Glasgow PPE – ATLAS IOP HEPP Conference - Dublin, 21 st – 23 rd March.

Andrey Korytov, University of Florida ISMD 2003 September 5-11, 2003, Kraków Soft QCD Phenomena in High-E T Jet Events at Tevatron Andrey Korytov for CDF.

PIC 2011, Vancouver August 29, 2011 Rick Field – Florida/CDF/CMSPage 1 Physics in Collision Rick Field University of Florida Outline  Examine.

Fermilab Energy Scaling Workshop April 28, 2009 Rick Field – Florida/CDF/CMSPage 1 1 st Workshop on Energy Scaling in Hadron-Hadron Collisions Rick Field.

Jet Studies at CDF Anwar Ahmad Bhatti The Rockefeller University CDF Collaboration DIS03 St. Petersburg Russia April 24,2003 Inclusive Jet Cross Section.

ATLAS Higgs Search Strategy and Sources of Systematic Uncertainty Jae Yu For the ATLAS Collaboration 23 June, 2010.

April 7, 2008 DIS UCL1 Tevatron results Heidi Schellman for the D0 and CDF Collaborations.

LPCC MB&UE Meeting CERN June 17, 2011 Rick Field – Florida/CDF/CMSPage 1 Rick Field University of Florida MB&UE Working Group Meeting CMS ATLAS.

H->bb Status Ricardo Gonçalo (RHUL) on behalf of the H->bb analysis team HSG5 Meeting, 16 February 2011.

LHC Higgs Cross Section Working Group: Vector Boson Fusion Sinead Farrington University of Oxford Co-contacts: A. Denner, C. Hackstein, D. Rebuzzi, C.

Experimental tests of the SM (1): the strong force FK8022, Lecture 5 Core texts: Review of Particle Physics : QCD minireview Further reading: Quarks and.

Improved measurements of the b quark mass at LEP María José Costa (IFIC-València) ICHEP 2002 Amsterdam Motivations to measure m b at M Z. Observables sensitive.

QCD at the Tevatron M. Martínez IFAE-Barcelona Results from CDF & D0 Collaborations.

H->bb Weekly Meeting Ricardo Gonçalo (RHUL) HSG5 H->bb Weekly Meeting, 15 February 2011.

Recent QCD Measurements at the Tevatron Mike Strauss The University of Oklahoma The Oklahoma Center for High Energy Physics for the CDF and DØ Collaborations.

Tools08 1 st July1 PDF issues for Monte Carlo generators Peter Richardson IPPP, Durham University.

ICHEP 2012 Melbourne, July 5, 2012 Rick Field – Florida/CDF/CMSPage 1 ICHEP 2012 Rick Field University of Florida Outline of Talk CMS at the LHC CDF Run.

TeV4LHC - Fermilab October 20, 2005 Rick Field - Florida/CDFPage 1 TeV4LHC Workshop Rick Field University of Florida CDF Run 2 Talk #1.

QCD Summary Report S. Ellis U. of Washington “Gee, I sure hope Joey wrote me a good talk.”

Moriond 2001Jets at the TeVatron1 QCD: Approaching True Precision or, Latest Jet Results from the TeVatron Experimental Details SubJets and Event Quantities.

1 Studies into Performance and Systematics of ME-PS matching in W+Jets Andrea Messina, CERN Ben Cooper, QMUL Berkeley VB+Jets Workshop 26th March 2008.

Automated Tree-Level Feynman Diagram and Event Generation

Energy Dependence of the UE

Implications of First LHC Data: Underlying Event Measurements

PHZ 6358 Fall 2011 The Modeling of the Underlying Event Rick Field

The “Underlying Event” in Run 2 (CDF)

MB&UE Working Group Meeting CMS UE Data and the New Tune Z1

Predicting MB & UE at the LHC

Predicting “Min-Bias” and the “Underlying Event” at the LHC

Monte-Carlo Generators for CMS

Rick Field – Florida/CDF/CMS

“Min-Bias” and the “Underlying Event” in Run 2 at CDF and the LHC

W/Z+jets Background Determination in the ATLAS ICHEP SUSY Notes

CDF Run 2 Monte-Carlo Tunes

“Min-Bias” & “Underlying Event” at the Tevatron and the LHC

“Min-Bias” and the “Underlying Event”

Inclusive Jet Production at the Tevatron

Monte-Carlo event generation for CEPC

Workshop on Early Physics Opportunities at the LHC

Measurement of b-jet Shapes at CDF

Rick Field – Florida/CDF/CMS

Presentation transcript:

Summary of ATLAS MC Tools Jae Yu LHC Higgs X-sec Workshop Univ. of Freiburg Apr. 12 – 13, 2010

Existing MC Tools on ATLAS For LO MC Generators, MRST2007-LO* pdf is used. For NLO, CTEQ6.6 is used for – Parton showering was done through HERWIG/JIMMY – The established tunes were done using HERWIG/JIMMY for CTEQ6.6 UE and MB tunings were done for PYTHIA and HERWIG/JIMMY on and

Versions of MC Tools HERWIG: JIMMY: 4.1 PYTHIA: MadGraph: 4 ALPGEN: 2.13 – Use HERWIG/JIMMY for PS/MPI POWHEG – Interfaced to both PYTHIA and HERWIG SHERPA:1.0.8 RIVET: 1.2.0a0 AGILe:1.1.4 PROFESSOR? HDECAY for BR calculations PROPHECY4f

SM MC Parameters Used in ATLAS Some minor differences between ATLAS common SM MC parameter set vs Higgs ParameterATLAS Higgs = LHC H x-sec groupATLAS MC PDFMSTW2008/CTEQ6.6 (NLO) MtMt 172.5±2.5 (GeV) MbMb McMc MWMW MZMZ ΓWΓW ΓZΓZ MuMu MdMd MsMs

Higgs NLO MC ATLAS NameOrderModeChannel HIGLUNLOinclusiveggF HproNLOexclusiveggF MCFMNLOexclusiveggF, WH/ZH VV2HNLOinclusiveVBF V2HVNLOinclusiveWH/ZH VBFNLONLOexclusiveVBF CDDNLO (QCD+EW)No H decaysVBF HQQNLO(?)ttH 4 flavorNLOExclusiveMSSM Neutral H FeynhiggsNLOExclusiveMSSM Charged H HggTotalNNLOExclusiveggF De Florian & GrazziniNNLOInclusiveggF HEPLiPNNLOExclusiveggF HNNLONNLOExclusiveggF 5 flavorNNLOMSSM Neutral H

MC09 Tune – PYTHIA6 Newest version of the color connection Bowler fragmentation function for heavy quarks Latest tune to LO*PDF set derived based on previous MC tunes Increased cut-off scale (PARP(82)) of 2.3GeV and rescale exponent (PARP(90)) to 0.25 Significantly lower UE at the LHC energy than the previous version Tunes using PROFESSOR gives better description

PYTHIA6 Tuning Performance 1.8TeV 7TeV

MC09 Tune – JIMMY/HERWIG Two parameters optimized comparing to TeVatron data – JMRAD(73) – had parton scatter probability – PTJIM: Cutoff for MPI Tune for LO*pdf: to correct for higher low-x g activity – PTJIM: 2.8(s/1.8TeV) GeV(s/1.8TeV) – JMRAD(73): Tune for CTEQ6.6 and POWHEG using PROFESSOR – PTJIM: 2.8(s/1.8TeV) (s/1.8TeV) – JMRAD(73)

HERWIG/JIMMY Tuning Performance 1.8TeV 7TeV

MC09 Tune Validation PYTHIA w/ LO*MRST2007lomod Processes: tt, DY (Z ee) and LQ production s=10TeV Cone jet algorithm (R=0.4) | η | 7GeV For DY, jets overlapping with e removed

MC09 Tune Validation M tt PtZPtZ N j tt NjZNjZ

Summary Most of the advanced and popular MC tools are implemented in ATLAS – Including many NLO and NNLO x-sec calculators and generators Tunes need to be re-established as components in tools change – PDF changes – Order of calculation changes – New code and physics process inclusions MSSM MC tools not fully incorporated Some privately provided codes are used need to have more uniform prescription to incorporate them Flexibility of the tools Guaranteed access and consistency of theoretical tools by establishing a central repository Usability of the advanced calculations by turning them into event generators (preferably un-weighted)