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Re: Problem using EvtGen [message #10891 is a reply to message #10889] Mon, 26 July 2010 16:49 Go to previous message
Jens Sören Lange is currently offline  Jens Sören Lange
Messages: 193
Registered: June 2005
first-grade participant
From: *
Hi Dipanwita,

I think your problem could be that probably you didn't set the CERN library.

export CERN_ROOT=....

(whereever your CERN library is).

However, there is now another (probably easier) way to run EvtGen,
namely the PndEvtGenDirect, developed by Björn Spruck (but undocumented yet).
I think so far we only have a small tutorial example existing. ial

under item (3).

PndEvtGenDirect *EvtGen = new PndEvtGenDirect("psi(2S)","PSI2S.DEC");

is how to use it directly in your simulation macro.
You need a few ASCII files (evt.pdl, DECAY.DEC and your own decay file, e.g. PSI2S.DEC in this case), but it is maybe easier than compiling

cheers, Soeren

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