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Erratum to Zgamma Analysis Previously I was using hist->Integral() to sum up histograms of mc, bg and data. Ie, I was not including the overflow bins.

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Presentation on theme: "Erratum to Zgamma Analysis Previously I was using hist->Integral() to sum up histograms of mc, bg and data. Ie, I was not including the overflow bins."— Presentation transcript:

1 Erratum to Zgamma Analysis Previously I was using hist->Integral() to sum up histograms of mc, bg and data. Ie, I was not including the overflow bins. I have now corrected this and am using hist->GetSum();

2 Erratum to Zgamma Analysis Helen Hayward, University of Liverpool

3 Z 0 ( e + e - ) OldNew MC30.9±1.631.3±1.6 BG2.8±0.9 MC+BG33.7±1.834.1±1.8 Data3536 Xsec4.7±0.8±0.34.8±0.8±0.3

4 Z 0 ( + - ) OldNew MC33.2±1.533.6±1.5 BG2.1±0.72.1±0.6 MC+BG35.3±1.635.7±1.7 Data35 Xsec4.5±0.8±0.24.4±0.8±0.2

5 Z 0 ( l + l - ) OldNew MC64.2±1.564.8±2.6 BG4.9±1.5 MC+BG69.169.8±3.0 Data7071 Xsec4.6±0.5±0.2

6 distributions:

7 Run:161830, Event: 69435 m(e +,e - )=96.9 GeV/c 2 m(e +,e -, )=381.7 GeV/c 2 Photon: E T =141.4 GeV Electron: E T =28.9 GeV Electron: E T =143.2 GeV

8 Conclusion After fixing the mistake: Final measured Xsec does not change. Gained one extra event in CC channel.


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