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Re: Evtgen - prob>probmax [message #13577 is a reply to message #13572] Wed, 06 June 2012 15:07 Go to previous messageGo to previous message
MartinJGaluska is currently offline  MartinJGaluska
Messages: 203
Registered: March 2010
Location: Germany
first-grade participant
 From: *physik.uni-giessen.de
I was very pleased as well that they replied. :)

With instructions of Anders Ryd I was able to adapt the decay model. As I do not have a very deep understanding of the algorithm used to simulate the physics of this specific decay, I have just translated the verbal instructions given to me into EvtGen code. The code seems to work and gives for the decay of \psi(2S) a similar value as the hard coded one used before: With the \psi(2S) mass of 3.68596 GeV in evt.pdl, I get a ProbMax of 0.0724191 (which looks reasonably close to the 0.08 which was hard-coded there before) and with a mass of 3.872 GeV the result is 0.273432.


Anders suggested I should submit the changes to the maintainers of the EvtGen code at Warwick who I have just contacted via email in order to tell them about the changes and hear their opinion. If everything is fine, I would like to ask Björn to submit the changes to svn.

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