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Systematic on Rear Leakage correction. Observation : Different behaviour between Data & MC. Data. TB 2007 / TB 2010 C_leak = A(E) – Slope * F2 Slope : no dependance with E in first approximation. Erec / Ebeam. With Approximate option. F2. MC : 20 – 300 GeV. Example of fits.
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Systematic on Rear Leakage correction Observation : Different behaviour between Data & MC
Data TB 2007 / TB 2010 C_leak = A(E) – Slope * F2 Slope : no dependance with E in first approximation
Erec/Ebeam With Approximate option F2
MC : 20 – 300 GeV Example of fits Erec/Etrue F2
Comparison TB/MC Compatible with flat for MC Trend to drop with E with TB data Flat or increasing for MC E_TB / Etrue (GeV)
TB2010 : A Fit with /without : Approximate option A currently calculated on event by event basis - Reflect the tendancy - Point at 300 GeV ? Current approximation of A(E) event per event
ISS Data Approximate Etrue with the energy of the integrated profile. Black/Red : 4 month data Grey/Orange : profile H Green : current guess of A per event
TB2010 : slope Etrue (GeV)
Systematics on Cleak A : - 2% Difference observed at 300 GeV (TB) Slope : + 15 % Change of slope in MC >> 2% @ 300 GeV 5% @ 1 TeV