[Rivet] inclusive kt jet cross section analysis

[Jon Butterworth]

Hi Lars,

That would be good I think yes.

Regarding the cross section, one has to provide the info somehow if you 
want the normalisation, so your main program should be able to use the 
setCrossSection() function to do this. James can probably say more...

Cheers,
Jon

Lars Sonnenschein wrote:
> Hello Jon
> looking into the HepEx0701051 analysis code I realized that you only 
> produce the histograms for kT separation parameter D=0.7.
> 
> Mike is also interested in the D=0.5 and D=1.0 plots, just one y bin as 
> in the publication, which requires to run the jet algo three times.
> 
> Should I do the appropriate changes in your code?
> 
> 	Lars
> 
> P.S.: I see also the normalization via the CrossSection() function, which
> gets set from RivetGun via setCrossSection().
> How is this supposed to work if Rivet is just fed with a file of HepMC 
> events (stand alone without Rivet)?
> 
> Wouldn't it be better to write the instantaneous generator cross section 
> into each HepMC event, so that Rivet could compute the normalization 
> factor while looping over the events?
> This of course would require a HepMC data member storing the information.
> But it would disentangle Rivet and RivetGun.
> 
> 
>  
> ________________________________
> Lars Sonnenschein    
> ________________________________
> Home Institution:
> PH/TH 4/1-030 
> CERN
> CH-1211 Geneve 23
> Switzerland
> Tel.:+41(22)767-2827
> --------------------------------
> ________________________________
> FNAL:
> D0, PK151
> Mailstop #352
> Fermilab, P.O.Box 500
> Batavia, IL 60510-500
> Tel.: +1(630)840-8740
> ________________________________

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Prof. Jonathan M. Butterworth,                  J.Butterworth at ucl.ac.uk
Head of High Energy Physics              http://www.hep.ucl.ac.uk/~jmb/
Physics and Astronomy Department                  Tel: +44 20 7679 3444
University College London                 Gower St, London WC1E 6BT, UK
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~