Request to add a parameter JetEtaMin in AK jet reconstruction

[azzi]

Dear Delphes developers,
in the framework of an analysis for the search for Top Partners at future colliders (HLLHC and FCC-pp) we would like to have the possibility of using a very small cone to reconstruct forward jets.
Currently it is possible to have a new jet collection with a very small cone ( R=0.1, 0.2) however, the fact that the reconstruction uses ALL the detector in the central region is very time and CPU consuming.
We would like to have the possibility of setting a JetEtaMin variable for that the algorithm avoids running on the central region.
Would you like us to send you the modified code or would you kindly take care of it?
We are using version 3.0.9 modified for jet substructure (Snowmass CMS Upgrade version)
Thanks a lot,
Patrizia, Giancarlo, Piero

[Alexandre Mertens]

Hello,

If I understand well, an easy approach would be to include additional "Efficiency" modules selecting only forward region object.
And then take the output of these efficiency modules as input for jet clustering.

This modification should definitely reduce the CPU consumption. What do you think?

Cheers,

Alexandre