Production Status and Solutions for Challenges in Particle Physics Experimentation
Addressing issues with event generation in particle physics experiments for W+jets and Z+jets, including solutions and recommendations for improving production efficiency and accuracy. Additionally, private discussions on gamma samples relevant for specific analyses are summarized, along with requirements for sample generation.
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Presentation Transcript
Part 1 : problems with Z, W production Final Words ?
Problems remaining We don't get the expected number of events for ... W+4jets Z+3 and Z+4jets (Drell-Yann and Z> nu nu) problem reported in a MG bug report : no answer Though no prob for the other jet multiplicities In the following: tests that have been carried solutions suggested = prescription to follow for the prod
W+jets No problems for 0,1,2 and 3jets Problem appears for exp number > 50k For W+4jets: tried: Detail the proc_card (e.g. split the leptons) Multigridpack : split in quarks from gluons in the final states Cut on drLL,drLj Suggested solution: Produce 20k events a job
Z+3j (10<mmll<50) No problems for 0,1 and 2 jets Problem appears for exp number > 50k For Z+3jets: tried: Detail the proc_card (e.g. split the leptons and jets) Cut on ptj, pta, drjl, mmjj, ptl Cut on drll (>= 0.15) Suggested solution: Impose minimum drll >= 0.15
Other Z+jets Z+4jets (mmll>= 50): split proc_card cut on drll ongoing Suggested solution: Produce 20k events a job Z+4jets (10 < mmll < 50): No test carried Suggested solution: Produce 20k events a job Z > nu nu +3jets (idem for 4 jets) Only tested splitting proc_card Suggested solution: Produce 20k events a job
Part 2 : photon production Final Words ?
Summary of private discussion with Greg Gamma samples relevant for t-gamma-q FCNC coupling and Higgs analyses List of samples to do : A+jets, AA+jets, WA+jets, ZA+jets TT+A, TT+AA TAq Some quick-and-dirty-produced samples are available for preview.
Summary of private discussion with Greg List of actions: 1. Fucking merging study : Strasbourg : A+jets, WA+jets, ZA+jets IIHE : TT+A, TT+AA, AA+jets Lobster eats Scampi! Loster step 0 is available. 2. Inclusive production : Strasbourg : WA+jets, ZA+jets, TAq IIHE : TT+A, TT+AA 3. Exclusive production : Strasbourg : A+jets IIHE : AA+jets 4. Improvement of Delphes-MA5tune reconstruction of photons (complementary to Taejeong s study) Step 3 could be redone for all the production in some days
Summary of private discussion with Greg Configuration (inspired of CMS cards): pta > 10 GeV draj > 0.01 drab > 0.01 draa > 0.01 maa > 50 GeV (if 10-50 GeV needed, produced after)
