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Minutes of the Strasbourg-Brussels meeting July, the 10 th 2014

Minutes of the Strasbourg-Brussels meeting July, the 10 th 2014. Part 1: production status. Gridpack production @ IIHE Lobster has been updated to work on IIHE. Step 1: exlusive mode + no masses recipe seem to run properly

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Minutes of the Strasbourg-Brussels meeting July, the 10 th 2014

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  1. Minutes of the Strasbourg-Brussels meeting July, the 10th 2014

  2. Part 1: production status

  3. Gridpack production @ IIHE • Lobster has been updated to work on IIHE. • Step 1: exlusive mode + no masses recipe seem to run properly • Gridpacks are mainly produced (samples with 4 extra jets still running) • Step 2 : generation of LHE files faces issues.Certainly related to cluster problem. To be confirmed. • To do: • validating step 1, 2 and 3 at IIHE. • Validating ME/PS merging configuration by generating the devoted plots. • BSM ttbar production @ IIHE: not started yet but soon.Big priority (taking profit from Adam's experience) • Higgs production @ IIHE: not started • Issues @ Strasbourg with ttZ and ttZZ [Adam] : length of the job •  Greg will take care of these processes. • PS: Adam found a bug in Lobster and fixed it (number of cores) • Lorenzo would like to compute again the cross-section for signal single-top samples.

  4. Coordination of the production : • How many events a process? Eric will send a proposal by email. • Duplication of the gridpacks at Strasbourg and Brussels. • Maintaining the wiki. • Starting BSM ttbar and Higgs samples • Tae Jeong should work on tZh sample? (doubts) Need to clarify this point. • Production experts must be available now.They could care of a postponed task: processes involving photon seems to be the priority [Adam?]. Tae Jeong's expertise is welcome.  New GANT chartrequired ???

  5. Part 2: Delphes status

  6. Caroline's talk : new b-tagging functionalities • b-tag (mis)identification is performed during the analysis. • New parameterization of the efficiency is implemented. • Eric is working on a AnalysisHelper class for providing common tools: • Origin of leptons • Parton – jet matching • Caroline's b-tagging functions •  To do: finishing this class • Eric requests a reminder of Delphes issues : • Jet energy scale (JES) : jets are more energetic than initial partons [Lorenzo] • Similar(?) problem with jets interpreted as an electron [Jeremy] • Isolation too perfect [Isis/Shima] • To do: investigating these points •  To do: proposing tracks and possible solutions for next meeting • Isabelle and Isis are still working on pile-up in Delphes

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