Delphes 2.0.5 cannot process output of Pythia in the standard MG5 chain ...

[Roberto Franceschini]

Hello I am simulating a very simple test process u u > u u in MG5 and I ask to do the process with delphes as last stage.

For what I can tell Pythia goes through well but then something bad happens running Delphes2, with the reported error being:

Error in <TChain::LoadTree>: Cannot find tree with name Analysis in file delphes.root
ERROR: cannot access branch Photon
Error in <TChain::LoadTree>: Cannot find tree with name Analysis in file delphes.root
ERROR: cannot access branch Electron
Error in <TChain::LoadTree>: Cannot find tree with name Analysis in file delphes.root
ERROR: cannot access branch Muon
Error in <TChain::LoadTree>: Cannot find tree with name Analysis in file delphes.root
ERROR: cannot access branch TauJet
Error in <TChain::LoadTree>: Cannot find tree with name Analysis in file delphes.root
ERROR: cannot access branch Jet
Error in <TChain::LoadTree>: Cannot find tree with name Analysis in file delphes.root
ERROR: cannot access branch ETmis
Error in <TChain::LoadTree>: Cannot find tree with name Trigger in file delphes.root

What can it be to cause this issue? any way to fix it? this was just Delphes2 installed on Mg5 with the install Delphes2 command ... although the log file says --- Version 1.9 of Delphes --- Last date of change: 7 May 2010, despite the file VERSION says it is 2.0.5 ...

Thanks for your help.
Cheers,
Roberto

PS
PGS goes well instead.

[Michele Selvaggi]

Hi Roberto,

we don't support Delphes2 anymore, can you please try with Delphes 3?

Cheers,
Michele