TWiki> Main Web>TWikiUsers>PedroSilva>PedroVtbMeasurementStudies>ISRFSRStudiesForVtb (2009-05-27, PedroSilva) EditAttachPDF

ISR/FSR systematics studies

Sample
Parameters Nominal High $\Lambda_{QCD}$ Low $\Lambda_{QCD}$ Obs.
MSTP(3) 2 1 default If set to 1 the user defines $\Lambda_{QCD}$ using PARP(61), PARP(72), PARJ(81).
PARP(61) 0.25 0.35 default Defines $\Lambda_{QCD}$ for ISR (space-like showers).
PARP(72) 0.25 0.35 default Defines $\Lambda_{QCD}$ for FSR (time-like showers).
PARJ(81) 0.25 0.35 default Defines $\Lambda_{QCD}$ for resonance decays ($\gamma/W/Z~\rightarrow~qq'$).
MSTP(68) 3 default 1 Controls the choice of maximum virtuality scale for the matching scheme for ISR.
PARP(67) 2.5 default 2.5 Multiplicative factor of the virtuality scale used to define the maximum parton virtuality.
!DataSet  
Cfg file file file  
$N_{evts}$ $10^6$ $10^6$ $10^6$ 10 files per sample
$\sigma_{generator}$ (pb)       414 (recommended value here)

More  Less 

Region Near ($\Delta\phi<60$) Transverse ($60<\Delta\phi<120$) Away ($\Delta\phi>120$)
Generator Madgraph Pythia+Tauola Madgraph Pythia+Tauola Madgraph Pythia+Tauola
Jet multiplicity
$H_{T}=\sum_{all~jets}p_{T}(jet)$

-- PedroSilva - 25 May 2009

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I Attachment History Action Size Date Who Comment
PNGpng Madgraph_htaway.png r1 manage 22.2 K 2009-05-25 - 11:03 PedroSilva  
PNGpng Madgraph_htnear.png r1 manage 20.9 K 2009-05-25 - 11:03 PedroSilva  
PNGpng Madgraph_httransv.png r1 manage 21.1 K 2009-05-25 - 11:04 PedroSilva  
PNGpng Madgraph_multaway.png r1 manage 18.1 K 2009-05-25 - 11:02 PedroSilva  
PNGpng Madgraph_multnear.png r1 manage 16.6 K 2009-05-25 - 11:02 PedroSilva  
PNGpng Madgraph_multtransv.png r1 manage 17.2 K 2009-05-25 - 11:02 PedroSilva  
PNGpng Pythia_htaway.png r1 manage 20.1 K 2009-05-25 - 11:03 PedroSilva  
PNGpng Pythia_htnear.png r1 manage 20.9 K 2009-05-25 - 11:04 PedroSilva  
PNGpng Pythia_httransv.png r1 manage 19.2 K 2009-05-25 - 11:04 PedroSilva  
PNGpng Pythia_multaway.png r1 manage 18.2 K 2009-05-25 - 11:05 PedroSilva  
PNGpng Pythia_multnear.png r1 manage 16.8 K 2009-05-25 - 11:03 PedroSilva  
PNGpng Pythia_multtransv.png r1 manage 17.5 K 2009-05-25 - 11:03 PedroSilva  
Texttxt TauolaTT_largeISRFSR_GEN_FASTSIM_IDEAL.py.txt r2 r1 manage 13.8 K 2009-05-27 - 11:06 PedroSilva  
Texttxt TauolaTT_nominalISRFSR_GEN_FASTSIM_IDEAL.py.txt r1 manage 13.3 K 2009-05-27 - 11:06 PedroSilva  
Texttxt TauolaTT_smallISRFSR_GEN_FASTSIM_IDEAL.py.txt r2 r1 manage 13.5 K 2009-05-27 - 11:07 PedroSilva  
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Topic revision: r3 - 2009-05-27 - PedroSilva
 
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