Hi Frank, Could you send a macro that we can use to understand your problem? Looks like you have a bad input parameter somewhere. F. Sabatie wrote: > > Hello, > > has anyone used the TGenPhaseSpace class by any chance? I currently use > ROOT_v2.25 on RH6.1. My problem comes when I try to Generate() the phase > space, I get a core dump. > > The interesting part of the program is really simple: > > TGenPhaseSpace ps; > TLorentzVector cm_mom; > Double_t masses; > > masses[0]=0.; > masses[1]=mproton; > > cm_mom.SetPxPyPzE(0,0,-qmod,nu+mproton); // qmod, nu and mproton are > Double_t > > if ( ps.SetDecay(cm_mom,2,masses,"normal") ) cout << "SetDecay Success > !" << endl; > // This does produce a success, so SetDecay works > > ps.Generate(); > // This core dumps !!!!!!!! > > Anyone has an idea what's going on? > > Regards, > Franck
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