Comparison with CTB04: h=0.35

1
Comparison with CTB04 h0.35
ATLAS (11.0.41) Pions 100 GeV 0.3lthlt0.4 CTB04
Pions 100 GeV h0.35 (no mag. Field, tracker in
front)
Cone 0.4
Cone 0.4
Calibrated E Had (GeV)
E EM (GeV) at EM scale
Poor event selection ??
V. Giangiobbe
V. Giangiobbe
Cone 0.1??
Cone 0.1??
Why no bump??
E EM (GeV) at EM scale
E Had (GeV) at EM scale

• EM ATLAS wider peak at 0 and bump at 70 GeV. Not
  present in CTB
• Had difference comes from calibration in ATLAS.
  Shape similar

2
Comparison with CTB04 h1
ATLAS (11.0.41) Pions 100 GeV 0.95lthlt1.05 CTB04
Pions 100 GeV h1 (no mag. Field, tracker in
front)
Cone 0.4
Cone 0.4
Calibrated E Had (GeV)
E EM (GeV) at EM scale
V. Giangiobbe
V. Giangobbe
V. Giangiobbe
V. Giangobbe
Rec. with parabola not OF
Cone 0.1??
Why no energy ??
Why no bump??
Cone 0.1??
E EM (GeV) at EM scale
E Had (GeV) at EM scale

• EM Still less E EM Similar evolution as ATLAS
  between h0.35 and 1.
• Had difference comes from calibration in ATLAS.
  Shape similar