ISR/FSR studies
Last update 23 December 2005
Pythia Drell-Yan from 1 TeV
PDF=CTEQ5L (HUGE statistics sample);
pT(e+/-)>20 GeV, eta(e+/-)<2.5
Cross sections before cuts = 6.6 fb (ISR/FSR off), 6.6 fb (ISR/FSR on)
Cross sections after cuts = 5.71 fb (ISR/FSR off), 5.74 fb (ISR/FSR on)
Comparison of kinematic observables
(dilepton invariant mass, FB asymetry, Z' rapidity,
Z' pT, lepton pT and lepton pseudo rapidity)
with and w/o ISR/FSR (left)
and ratio between both (right); relative normalisation by number of events after cuts :
![](http://lpscwww.in2p3.fr/atlas/Zprime/ifsrPlots/Rapport_DY_Py_1000-8000.gif)
Pythia ADD model (T.Rizzo, M=4 TeV) from 1 TeV ;
PDF=CTEQ5L (HUGE statistics sample );
pT(e+/-)>20 GeV, eta(e+/-)<2.5
Cross sections before cuts = 5.88 fb (ISR/FSR off), 5.87 fb (ISR/FSR on)
Cross sections after cuts = 5.23 fb (ISR/FSR off), 5.28 fb (ISR/FSR on)
Comparison of kinematic observables
(dilepton invariant mass, FB asymetry, Z' rapidity,
Z' pT, lepton pT and lepton pseudo rapidity)
with and w/o ISR/FSR (left) and
ratio between both (right); relative normalisation by number of events after cuts:
![](http://lpscwww.in2p3.fr/atlas/Zprime/ifsrPlots/Rapport_ZpKK_ADD_1000-8000_R4000.gif)
Creation date: 6 December 2005