LHC EW WG ATLAS W/Z Measurements Alberto Belloni Harvard University LHC EW WG - Discussion Uta Klein University of Liverpool.

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Presentation transcript:

LHC EW WG ATLAS W/Z Measurements Alberto Belloni Harvard University LHC EW WG - Discussion Uta Klein University of Liverpool

5/16/2012Uta & Alberto - W/Z LHC EW WG2 Items for Discussion Minutes of last meeting (9.5.12) erialId=minutes&confId= erialId=minutes&confId= “Homework” : ongoing –Understand and check dressing (in outcome talk) Documentation: What do we want, how do we use it? –Need librarian and name for directory Similar to //svn.cern.ch/reps/lhcvjets: propose /reps/lhcwz Librarian needs to authorize other people Discuss content of talks next week –Circulate slides of two combined talks

5/16/2012Uta & Alberto - W/Z LHC EW WG3 Agenda Discussion Introduction – at most 5 min (? if at all) –Would need to find person/define rough contents Experimental talks – 15-to-20 min +10 min dis. –Present latest measurements, show highlights –Show ingredients for combinations, what you can put on the table for LHC EWK WG –No need to go into every detail of 2011/2012 plans, but emphasis important changes (e.g. trigger)

5/16/2012Uta & Alberto - W/Z LHC EW WG4 Penultimate Talk Proposal for unified treatment of model and theory uncertainties – minutes –Describe propagation of theory uncertainties on measurement –Define robust MC framework Level of QED corrections: quantify (and remaining uncertainties) Extrapolation uncertainties (PDFs, PS, PDF reweighting) EWK parameter schema –External calculations for HO QCD (FEWZ, DYNNLO) and HO EW (ISR, ISR-FSR interference, pure weak effects, depending on parameter schema choice – Baur, SANC etc.)

5/16/2012Uta & Alberto - W/Z LHC EW WG5 Outcome (=Last talk) Proposal for how to achieve better comparison of measurements – 20+10(/100) minutes –Each experiment makes their best measurement Make list of plots: W lepton pseudorapidity, Z rapidity, W charge asymmetry Not foreseen yet: Z pT –Provide correction factors from Born to dressed to bare leptons in each fiducial region Backup: add slide with cuts –Provide extrapolation factors or emulate/do cuts in order to compare directly with other measurements –Prepare overlay plots Each experiment responsible for plot with their best measurement overlaid to others (with corrections)