Overview

  • Hadron subtraction at high pT (EMCEGA)
  • estimated the shape with hadron candidate

E/p distributions

  • E/p distribution
    • -1<nSigma<3 (electron)
    • nSigma <- 3.5 (hadron)
  • nSigma < -3.5 represent background shape
Pic_EopBGsubnSig35noM20.png
  • E/p after subtracting nSigma < -3.5
Pic_EopBGsubnSig35noM20_fit.png
  • E/p mean and Sigma
Pic_Eop_mean_sig_afBGsub.png

Hadron contamination

  • Hadron contamination level about 10 % with -1<nSigma<3 and 0.9 < E/p < 1.3
Pic_HadConSig35noM20_fit_eop90.png Pic_HadConSig35noM20_fit_eop95.png

Raw electron spectrum after subtracting Background

Pic_Raw_ele_subBG.png ( 0.9 < E/p < 1.3)

/Users/shingo/WRK/Dayana/2012/05/10/Electrons_PbPb_20_20120508-0942_tpc

-- ShingoSakai - 22-May-2012

Topic attachments
I Attachment History Action Size Date Who Comment
PNGpng Pic_EopBGsubnSig35noM20.png r1 manage 23.2 K 2012-05-22 - 12:38 Ssakai  
PNGpng Pic_EopBGsubnSig35noM20_fit.png r1 manage 24.5 K 2012-05-22 - 12:36 Ssakai  
PNGpng Pic_Eop_mean_sig_afBGsub.png r1 manage 17.2 K 2012-05-25 - 15:24 Ssakai  
PNGpng Pic_HadConSig35noM20_fit_eop90.png r1 manage 12.3 K 2012-05-22 - 12:33 Ssakai  
PNGpng Pic_HadConSig35noM20_fit_eop95.png r1 manage 14.9 K 2012-05-22 - 12:34 Ssakai  
PNGpng Pic_Raw_ele_subBG.png r1 manage 8.8 K 2012-05-24 - 16:33 Ssakai  
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Topic revision: r6 - 2014-06-09 - ShingoSakai
 
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