Neutral Current: Ongoing Systematic Studies
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Ricardo Gon calo Review Meeting 18t h September 2001 1 Neutral Current: Ongoing Systematic Studies SFEW Review Meeting 18 th September 2001 Ricardo Gonçalo for Alexander Kappes Henning Schnurbusch Matthias Moritz •Photoproduction normalisation: Alexander (98/99) + Henning (99/00, no plots yet) •QED Compton and electron energy smearing: Matthias •First inner ring and hadronization: Ricardo
description
Neutral Current: Ongoing Systematic Studies. Ricardo Gonçalo for Alexander Kappes Henning Schnurbusch Matthias Moritz. SFEW Review Meeting 18 th September 2001. Photoproduction normalisation: Alexander (98/99) + Henning (99/00, no plots yet) - PowerPoint PPT Presentation
Transcript of Neutral Current: Ongoing Systematic Studies
Ricardo Goncalo Review Meeting 18th September 2001
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Neutral Current: Ongoing Systematic
Studies
SFEW
Review Meeting
18th September 2001
Ricardo Gonçalo
for
Alexander Kappes
Henning Schnurbusch
Matthias Moritz•Photoproduction normalisation: Alexander (98/99) + Henning (99/00, no plots yet)
•QED Compton and electron energy smearing: Matthias
•First inner ring and hadronization: Ricardo
Ricardo Goncalo Review Meeting 18th September 2001
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Photoproduction Normalisation 1998/99 e-p
Event Selection:
DST-bit 12
Q2 > 120 GeV2
E(lumi-) < 2 GeV
5 < E(lumi-e) < 15 GeV
ET > 30 GeV
|z-vertex| < 50 cm
Ecalelectron> 10 GeV
Ricardo Goncalo Review Meeting 18th September 2001
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Photoproduction Normalisation 1998/99 e-p
Before Ecalelectron> 10 GeV
cut
Ricardo Goncalo Review Meeting 18th September 2001
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Photoproduction Normalisation 1998/99 e-p
Scaled tagged data
Tagged data
tagged data
MC cross section not corrected for generator level cuts
Ricardo Goncalo Review Meeting 18th September 2001
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Hadronization: hadronic energy flowHadronic energy flow: average energy deposit per
event in cells/islands, calculated in bins of polar angle/pseudo-rapidity
(dE/d ),(dE/d) = E( , ) / N
Cells: E > 80 MeV (EMC cells) / 140 MeV (HAC cells)
Islands: remaining after CorAndCut correction/backsplash cut
Pre-FPCHOT
bug fix
Ricardo Goncalo Review Meeting 18th September 2001
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Hadronization: hadronic energy flow
Ariadne (+CorAndCut) seems to describe the data well to first approximation
Pre-FPCHOT
bug fix
Ricardo Goncalo Review Meeting 18th September 2001
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Hadronization: hadronic energy flow
Ratio Plots: {(dE/d ) data - (dE/d ) MC } / (dE/d )
MC
(data - Ariadne)/Ariadne; ( data - MEPS ) / MEPS
?! ?
Pre-FPCHOT
bug fix
Ricardo Goncalo Review Meeting 18th September 2001
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Hadronization: hadronic energy flow
2 problems: FCAL Inner Ring and MEPS bias
Pre-FPCHOT
bug fix
Ricardo Goncalo Review Meeting 18th September 2001
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Hadronization: hadronic energy flow and FCAL Inner Ring
Energy flow in FCAL 10 cm radial bins
Ariadne; MEPS
1st IRbeampipe
Superposition of current jet and remnant
jet
remnant
FPCHOT bug fix
for Ariadne
only
Ricardo Goncalo Review Meeting 18th September 2001
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Hadronization: hadronic energy flow and FCAL Inner Ring
Ariadne not good in 1st IR; MEPS closer to data but still not perfect
FPCHOT bug fix
for Ariadne
only
Ricardo Goncalo Review Meeting 18th September 2001
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Hadronization: hadronic energy flow and FCAL Inner Ring
Energy flow in BCAL: bias in MEPS; Ariadne looks OK
FPCHOT bug fix
for Ariadne
only
Ricardo Goncalo Review Meeting 18th September 2001
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Hadronization: hadronic energy flow and FCAL Inner Ring
FPCHOT bug fix
for Ariadne
only
Ricardo Goncalo Review Meeting 18th September 2001
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Hadronization: hadronic energy flow and FCAL Inner Ring
- remove IR energy from DA calculations for had > 0.314rad ?
- vary energy scale in IR ?
- take cells for low had or do W cut à la 96/97 ?
- Vary remnant parameters in Monte Carlo ?
To do:
Use all MC for better stats
Redo properly with CureMyCalDoc
Check Monte Carlo with remnant parameters
Ariadne reproduces the data except in FCAL 1st IR
This affects low y / high x / low had Need a good systematic error estimation in IR:
W20GeV
