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Update on Z( μμ ) ϒ

Update on Z( μμ ) ϒ. Liang HAN, Liang HE , Suen Hou , Minghui LIU,Hongye SONG IPAS&USTC. Data and MC comparison. Data: Period D-M (2701 events) MC: Z+ ϒ sample : mc11_7TeV.126016.Sherpa_Zmumugamma_1jet Z+jet sample : mc11_7TeV.117661.AlpgenPythiaZmumuNp0/1/2/3/4/5_pt20.

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Update on Z( μμ ) ϒ

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  1. Update on Z(μμ)ϒ Liang HAN, Liang HE, SuenHou, MinghuiLIU,Hongye SONG IPAS&USTC

  2. Data and MC comparison Data: Period D-M (2701 events) MC: Z+ϒ sample : mc11_7TeV.126016.Sherpa_Zmumugamma_1jet Z+jet sample: mc11_7TeV.117661.AlpgenPythiaZmumuNp0/1/2/3/4/5_pt20 Compare MC Vs. data Estimate jet background

  3. Event Selection of Period D-M *1.Signal MC using MCFM NLO cross-section; *2. Background MC using data matrix method estimation;

  4. Total Event in Each pT_ϒ bins

  5. pT_ϒ dR(lϒ)

  6. pT_leadingμ pT_subleadingμ

  7. InvMass of μμϒ InvMass of μμ

  8. Z+jet background estimation NLoose : photon pass 12 Tight shower shape NTight : photon pass 12 Tight shower shape + Econe30t<6GeV εs: make use of FSR photon muon stream sample M(ll)<83GeV && 80GeV<M(llϒ)<96GeV εb: get from dijet jet trigger sample W,Z veto Find EM object back to back a jet passT8 Reverse T4 (Anti-Tight)

  9. Z+jet background estimation Uncertainty is still a work in progress

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