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Re: 4Cfit [message #16601 is a reply to message #16600] Tue, 13 May 2014 16:01 Go to previous messageGo to previous message
StefanoSpataro is currently offline  StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino
first-grade participant

From: *rz.uni-frankfurt.de
In this way you are starting from a psi(4160) state, which has a mass well fixed, and evtgen does not takec ace that you set 8 GeV/c as momentum, it is automatically calculating the momentum from the psi mass.
( p=8.352 and energy=9.342). Then most probably 8 GeV/c are not enough to form such a state.

The alternative is to start from a pbarpSystem (in both sim and dec), and in such a case your 8 GeV/c will be set. But i think that with this low momentum evtgen will now have the psi(4160) mass.
 
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