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SMWZjetsBGStudy

Who is doing what ?

Which background Which analysis Method Few lines about the method Lumi. needed Major sources of systematic error Overall systematic error due to this method Links to talks and note Names of people involved
QCD Z+jets Fully-Data driven, Semi-Data driven Matrix method. Use OS-DF, MLL, isolation or Impact parameter to define control sample ~1 pb-1 Understanding of isolation and impact parameter ~10-20% here Tapas Sarangi, German Carrillo, Sau Lan Wu, Univeristy of Wisconsin-Madison
top W+jets xsec ratio Data-driven/hybrid data+MC Template fits in one or more variables: njet, jet ET, btag, MET, etc. >=10 pb-1 Template shapes Undetermined Antonio Boveia, University of Chicago
QCD W+jets Data-driven/hybrid data+MC Template fits in one or more variables: isolation, MET, asymmetry in bins of jet multiplicity ~1 pb-1 Template shapes ~10-20% Note for use of inclusive method for Wenu Matthias Werner, Ralf Bernhard, Jochen Hartert, Karl Jakobs, Kristin Lohwasser, Luzie Weithofer, Universitaet Freiburg
QCD W+jets muon channel ABCD Isolation vs MET, d0 vs iso   Understanding the different components of the muon signal, correlations, signal contamination of control samples     George Redlinger, BNL (for now). Possibility of collaboration with others at BNL working with muons.
QCD W+jets electron channel Data-driven cut reversal, ML fit Use photon selection or reversed IsEM bits to select a QCD-only sample. From this sample, build a template in Missing Et or similar variable and fit for the QCD/W+jets signal. This method has the potential to expand to include other backgrounds, like top 1-10 pb-1 Uncertainties on the shape of the cut-reversed sample   W/Z+jets common note Monica Dunford, Imai Jen-La Plante
QCD Heavy Flavor W+jets electron channel Data-driven; ABCD or fit Look at b-tagging, MET, isolation, deltaPhi(elec-MET) 1-10 pb-1 b-tagging (if used), shape differences outside/inside signal region     Joe Tuggle, University of Chicago
Inclusive Z+jets muon channel Data-driven/hybrid data+MC Template fits using sidebands   Template shapes     Malachi Schram, Rodger Mantifel (McGill University)
QCD W+jets muon channel Matrix-Method d0 vs iso, vs Etmiss ~1 pb^-1 possible correlations d0 vs iso, etmiss (looks modest for now), fake muons   Top note Alexander Doxiadis, Ivo Van Vulpen (Nikhef), Andre Bach, Dimitris Varouchas, J.-F. Arguin
QCD W+jets electron channel ABCD or Matrix method Rejection of EtMiss and/or MT cut is measured for loose isEM (with medium veto) and assumed to hold for medium or tight isEM as well with 10 nb-1 ~50% statistical error for W+1jet Limited MC statistics (JF17), correlation between isEM and MissEt if using calibrated MissET ~30% Results for inclusive W, on the observation sharepoint T. Lari, F. Meloni (Milano)
QCD, W(munu) Z+jets(muon channel) Data driven Same sign (SS) distribution corrected by a factor (K) computed looking at side-bands -- Estimation of the factor K -- W/Z+jets common note S.Grinstein -M. Martinez -E. Meoni -E.Perez (Barcelona-IFAE)
QCD(+Wenu) Z+jets(electron channel) Data driven Jet distributions with OS/SS vs relaxing of ID cut 1pb-1 Correct DR electron-Jets, BBbar/lightJets- Subpopulations -- Presentation in WZ+jets meeting Ulla Blumenschein, Katharina Bierwagen(Goettingen)
QCD(+top) Z+jets(electron channel) Data driven, Semi-Data driven Template fits with Isolation and MET 1-10pb-1 Understanding Isolation cuts and MET, Template shapes -- Presentations in Z+jets meeting Alex Penson, Kathy Copic (Columbia)
QCD W+jets electron channel METvsIso Similar to ABCD in muon channel, using MET and fractional isolation as variable to separate out the QCD 0.1-1pb-1 Correlation between MET and iso See note REcent Note Sam Whitehead, Kristin Lohwasser, Hugo Beauchemin
-- TapasSarangi - 07-May-2010
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Topic revision: r16 - 2014-11-20 - TWikiAdminUser
 
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