[Rivet] mcplots

[Andy Buckley]

On 01/06/11 12:35, Hendrik Hoeth wrote:
> Thus spake Andy Buckley (andy.buckley at ed.ac.uk):
>
>> As you've noted, for plots which are just normal or profile
>> histograms (and in the normal case you don't care about
>> normalisation), then you can get adequate (but inexact) statistical
>> merging by adding/averaging the bin values in each histo across your
>> different runs...
>
> And for the profile histos in e.g. the CDF leading jet UE analysis you
> can slice the histograms easily using rivet-mergeruns. That's what I
> always do for them.

For PYTHIA, I use the MSTP(142)=1 (IIRC) setting to generate these 
profiles weighted... that greatly reduces the number of required events. 
I still use about 1M or so, though... and should maybe use more. It 
would be *really* nice to have that pThat enhancement / weighting in 
Pythia 8... the other C++ generators already have it.

Andy

-- 
Dr Andy Buckley
SUPA Advanced Research Fellow
Particle Physics Experiment Group, University of Edinburgh

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