search for a trivial example on how to loop on delphes tree

[pietro govoni]

TO whom it may concern,

I'd like to prepare a trivial example to loop on the events of a delphes tree, and for each event to loop on the particles of that tree (or any collections), and printout a variable of each particle (like the energy).
I would like to do all of this in a single, small, code, so that I understand all the basic passages that have to be done to read the ttree, without any sophisticated external or automated classes.

Could you please point me to such an example?

Best regards,

pietro

[Pavel Demin]

You can find the most simple examples at

https://cp3.irmp.ucl.ac.be/projects/delphes/wiki/WorkBook/QuickTour

and in the examples macros

examples/Example1.C
examples/Example2.C
examples/Example3.C

[pietro govoni]

Dear Pavel,

thanks a lot! I forgot to mention in the email that I'd like to do that in python.
Is there an equivalent of the very nice examples you provided me with?

Best regards,

pietro

[Pavel Demin]

Dear Pietro,

Conversion of the C++ examples to Python/pyROOT is quite straightforward.

Attached is a Python/pyROOT script similar to Example1.C.

I'll add it to the next Delphes release.

Regards,

Pavel

[pietro govoni]

Thanks Pavel!

pietro