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Generators News

Generators News. OUTLINE. Generators Upgrade Simulation Upgrade Common Samples MC MC Fixing Status of Generators Projects. Generators Update. Global Status I had big problems to build generators executables for a month or so!!!

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Generators News

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  1. Generators News • OUTLINE • Generators Upgrade • Simulation Upgrade • Common Samples MC • MC Fixing • Status of Generators Projects D0-France November 8th 2004

  2. Generators Update • Global Status • I had big problems to build generators executables for a month or so!!! • Thanks to couple of changes by G. Brooijmans and especially some cleaning-up by L. Duflot, I could start building… just 2 weeks ago • Pythia • Version update: v6.202 -> v6.223 • bug fix in R-S graviton cross section (processes 391, 392) • introduction of gg->tbH+ (401) and qqbar->tbH+ (402) processes • bug fix in qq->qq in TC (process 381) • Bug fix based on MSTU(24): can remove events w/ bad string connections, some infinite loops,… (Thanks to M. Begel and D. Wicke, also included in the CAPS script thanks to C. Biscarat) D0-France November 8th 2004

  3. Generators Update • Herwig & Jimmy • Version update: v6.500 -> v6.505 • New ISAWIG interface • Interface to MC@NLO • LHA interface to FOME generators • More ME for the spin correlation algorithm • Introduction of Jimmy v4.1 for Multiple Parton Interactions (MPI): • This will enable Pythia vs Herwig comparisons on the same footing, especially for fragmentation systematics. • Can be turn ON or OFF from the cardfiles (MPIFLAG) • One parameter needs study/tuning: MPIPT minimum pT for secondary scatters (default: 2.5 GeV) D0-France November 8th 2004

  4. Simulation Upgrade • Geometry Upgrades • Muon chambers: • WAMUS shift and rotation : p14.08.00, p17.00.00 • Tracker: • SMT cables, D0 Note 4498: p14.08.00 • beam pipe, D0 Note 4511: p14.08.00 • Simulation improvement for charge diffusion in and cross talk in SMT, D0 4468: p14.07.00(?) D0-France November 8th 2004

  5. Simulation Upgrade • D0Raw2Sim • Full scale test bench: • p14.d0raw2sim.00 • Certified • Zero/Minimum-Bias data (B. Hirosky et al.) : • D0Raw2Sim formatting • SAM datasets as a function of L • Production version: • p14.08.00 certification (I. Bertram, S. Eno et al.) D0-France November 8th 2004

  6. Common Sample MC • Generators • Pythia v6.223 • Alpgen v1.3.3+ Pythia v6.223 using the CAPS Script • Introduce Herwig v6.505+Jimmy v4.1 => need new herwig cardfiles: • B/C-hadron list to be decayed by EvtGen • 2 new keywords for MPI in each cardfiles (MPIFLAG, MPIPT) • Releases • Generators: p17.0x.yy • Simulators & Reco: d0g*+d0sim+d0rwa2sim+d0reco p14.08.00 • mc_runjob: v06-03-03 (or higher) • Cardfiles: v00-08-30 (or higher) • D0_mess: p14.08.00 • EvtGen: p14.08.00 • A new python dictionnary will be provided for new MC requests D0-France November 8th 2004

  7. Common Sample MC • Multiple ppbar Interactions • Default: use of D0Raw2Sim • Other option: MC overlays if still requested will mean producing new such samples w/ high stat. (Physics Groups should tell us what they want) • Need to revisit the mean number of min. bias events to be overlaid to hard scatterings: • Lumi. Profiles can be used in D0Raw2Sim? • Conservative average for MC min. bias overlay? • Parameters • Should we keep on producing top events w/ Mt=175 GeV? • Other modifications? D0-France November 8th 2004

  8. MC Fixing • For p14 MC TMBs • Purpose: essentially to apply cal_t42, also improved vertexing • Facility: CCIN2P3 (Lyon Farm) • Statistics (as of september): • p14.06.00: 7 M • p14.05.02: 4 M • p14.0501: 22 M • p14.03.02: 0.5 M • p14.03.00: 0.1 M • p14.02.00: 9 M • p14.01.00: 0.6 M • Should start ~ this week • Contributors: C. Biscarat, F. Deliot, L. Duflot, M. Jaffre, E. Kajfasz, P. Lebrun, S. M. D0-France November 8th 2004

  9. Status of Generators Projects • http://www-d0.fnal.gov/computing/MonteCarlo/gen_projects.html • Generators Infrastructure: • Study and fix the event record at the Fortran (HEPEVT) level using • the hepevt_repair program (Contact: C. Biscarat) • Update Tauola library. Update Tauola interface with Tauola authors • interface. Expand to all 22 decay channels (Contact:  C. Biscarat) • Review and improve the particle selection in MC++ including • additional tests using the particle status (Contact: S. M., • S. Protopopescu) • Develop a framework executable for Alpgen(Contact: S. M., • C. Biscarat. High Priority) • Interface PHOTOS to Pythia and Herwig in a consistent way • (Contact:S. M., G. Brooijmans) • Test the Multiple Parton Interaction in Herwig v6.505 using the • Jimmy v4.1 package (p17) (Contact: S. M.) D0-France November 8th 2004

  10. Status of Generators Projects • Introduce the FOME MD in Alpgen script or MCalpgen.x, mc@nlo, • CompHep,... (Contact: S. M.) • Test EvtGen C/B-hadron decays in Herwig (p17) (Contact: S. M.) • Introduce an optional use of the PDFLIB and the LHAPDF in singlegenerators executables (MCpythia.x, MCherwig.x,...) (Contact: S. M., P. Telford, H. Schellman) • Introduce an optional use of the ISAJET and SUSPECT SUSY RGEsin susy_tools (Contact: S. M.) • Update PROSPINO to v2 (Contact: S. M.) • Systematize the usage of the SUSY LHA in susy_tools (Contact: • S. M.) • Introduce and systematize the usage of HDECAY and SDECAY for • Higgs and SUSY MC samples. Include these tools in susy_tools • (Contact: S. M.) • Improve and update the documentation D0-France November 8th 2004

  11. Status of Generators Projects • Using CD Generators DB MC Samples: • Copy the samples from ENSTORE, process them using a custom • MCstdhep.x, write the generator file metadata, store the generated • file in SAM, define a SAM dataset, submit a MC Request for • processing at the MC farms(Contact: S.M., ongoing) • Improvment: also write a FOME MD and declare the MCFIO file • inSAM • Generators Certification: • Review and fix the problems with generators parameters and • metadata in mc_runjob/d0runjob. Discuss thhe implementation and • test with the d0runjob team. An alternative is to develop a Cardfiles • DB(Contact: S.M., C. Biscarat, G. Brooijmans) • Improve and systematize the usage of the Cardfiles_Tester.sh • (Contact: S.M.) • Revive and improve the mctest package (Contact: J. Rani) D0-France November 8th 2004

  12. Status of Generators Projects • Generators Usage: • PDF usage and PDF uncertainties: (Contact: S. M., • T. Nunnemann) • Fragmentation systematic uncertainties: study and provide a general • procedure to measure the systematic uncertainty related to the • fragmentation model used in our MC samples. The 2 reference models • are the Lund fragmentation implemented in Pythia and the cluster • fragmentation implemented in Herwig ran with the Jimmy package • to simulate MPI(Contact: S. M.) • Matrix Element and Parton Shower matching: implement the • Mangano's matching prescription at D0. Provide tools to apply it on • the Alpgen+Pythia (and more generally on FOME+PS) MCprod. • at D0 (Contact: M. Begel, S. M., ongoing, helpneeded) • Merging of Alpgen+Pythia DSPACK files in the Common Alpgen • Production Script (Contact: C. Biscarat, done, testing needed) D0-France November 8th 2004

  13. Status of Generators Projects • Generators Informations in MC Samples: • Maintain the MC Catalog, develop the "step 3" for automated • samples search (Contact: S. M., C. Biscarat) • Send feed-back on bugs and problems to this central Catalog • (All users!!!) • There’ll soon be new automated dataset definitions: • Old: --dim=“global.requestid <ReqID> and content_status good and • availability_status available and data_tier thumbnail” • req-id-<ReqID>-tmb-good • New: --dim=“global.requestid <ReqID> and content_status good and • availability_status available and data_tier thumbnail minus • thumbnail.appversion p14tmbfix2.03” • req-id-<ReqID>-tmb-good-unfixed • req-id-<ReqID>-tmb-good-p14tmbfix2.03 D0-France November 8th 2004

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