produce lowPtGsfEle slimmed collections for the default miniAOD

[slava77]

This is a follow up to #25753 .
During the review of this PR the new slimmed low-pt electron collections were added to the miniAOD only for bParking era/modifier due to a significant size increase for the default setup.
This issue should aim for a working low-pt electron setup in the default miniAOD to make use of the products created in RECO and saved in AOD.

[cmsbuild]

A new Issue was created by @slava77 Slava Krutelyov.

@davidlange6, @Dr15Jones, @smuzaffar, @fabiocos, @kpedro88 can you please review it and eventually sign/assign? Thanks.

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[slava77]

assign reconstruction,xpog

@Sam-Harper @lsoffi @bainbrid @mverzett
I consider this as a somewhat low priority/best-effort case and perhaps to be implemented with some real feedback from the bParking data experience.

[cmsbuild]

New categories assigned: xpog,reconstruction

@slava77,@peruzzim,@perrotta,@fgolf you have been requested to review this Pull request/Issue and eventually sign? Thanks

[slava77]

@jainshilpi @lsoffi @afiqaize @SohamBhattacharya
was there any progress on this topic?

[jainshilpi]

The work on finalizing the regression and ID MVA is ongoing. Once that is done (~a months time), it can be put in miniAOD.

[slava77]

@jainshilpi @lsoffi @afiqaize @SohamBhattacharya
please update if there was some recent progress on this topic.
Thank you.

[bainbrid]

Hi @slava77, I'm in touch with @jainshilpi and @lsoffi to figure out what's needed. We'll get back to you ASAP.

[slava77]

@jainshilpi @lsoffi @afiqaize @SohamBhattacharya
please update if there was some recent progress on this topic.
Thank you.

ping.
AFAIK, some work has been done recently; it would be nice to know (updated) expected time to delivery.
Thank you.

[jainshilpi]

Talking to Chiara, in ~2 weeks, they expect it to be done.

[slava77]

Talking to Chiara, in ~2 weeks, they expect it to be done.

please update on the status; we are getting closer to the deadlines

[jainshilpi]

(1) Francesca will be presenting on Monday on the energy regression. The code is already ready for 11X. The training is currently performed using 2018 samples. Once the UL 2018 samples are available, the training will be updated. In teh meantime, to create a PR, we understand the training should be put in the tags. We will discuss with AlcaDB group on Monday about the creation of these temporary tags so that PR can be done.

(3) ID is already been taken care of by @bainbrid here: #31080
We are following up as to what would be the best way to put in the low pT electron ID in miniAOD. userfloats seems to be the best option to us. @guitargeek has already provided a recipe so it should work.

[bainbrid]

For (3) above, I'll add the userFloat today or early next week. We need the retraining of the model, which will start next week too (shouldn't take too long).

[slava77]

+1

provided with #31220 (11_2_0) for a default miniAOD and #32372 for UL re-miniAOD in 10_6_X since CMSSW_10_6_20