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Electron Reconstruction in Bhabha Events: Progress & Challenges

Work in progress on electron energy reconstruction from Bhabha events. Facing technical challenges adapting CN code. Includes momentum corrections for accurate reconstruction. 8 Relevant

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Electron Reconstruction in Bhabha Events: Progress & Challenges

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  1. electron reconstructionwith bhabha events P.Azzurri – WWTF 01/10/03 • CLAS 24 • two leading tracks with m(1,2)>50GeV/c2 • both with electron id. a la W • |cos(theta)|<0.90 Work in progress … Plenty of technical problems to adapt CN code to Bhabha events !

  2. Electron energy reconstruction • DATA-MC bias : • electron momentum: +29[80] MeV {E/Eb=0.90} • + brems correction: +410[47] MeV {E/Eb=0.958} • + fsr correction : +420[45] MeV {E/Eb=0.965} electron reconstruction on bhabhas

  3. Electron energy reconstruction final energy momentum brem corr fsr corr electron reconstruction on bhabhas

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