sPHENIX discussion of software

[Anthony Frawley <afrawley AT fsu.edu>]

Hello Hugo,

What particles are thrown in these events? They are low occupancy?

Thanks

Tony

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From: sPHENIX-software-l <sphenix-software-l-bounces AT lists.bnl.gov> on behalf of Hugo Pereira Da Costa <hugo.pereira-da-costa AT cea.fr>
Sent: Friday, January 8, 2021 12:13 PM
To: Anthony Frawley <afrawley AT fsu.edu>; Huang, Jin <jhuang AT bnl.gov>; Osborn, Joe <osbornjd AT ornl.gov>; sphenix-software-l AT lists.bnl.gov <sphenix-software-l AT lists.bnl.gov>
Subject: [Sphenix-software-l] Deterioration in upsilon invariant mass resolution

 

Hi Tony, others,

with latest code I see a terrible upsilon invariant mass resolution. (while using GenFit toolchain, which has not change for month). This was not the case on december 21st.

Looking back at the comits since then I think I have identified the culprit as being commit 784ae256185aa9c77d4604c59f0cf1dd1cdc3548 (the optimization of PHG4TPCElectronDrit) Plots attached represent the Upsilon inv mass resolution before (InvMassUpsilon_upsilon_truth_micromegas_nominal-old.pdf) and after (InvMassUpsilon_upsilon_truth_micromegas_nominal-new.pdf) the said bunch of commits. 

Similar deterioration is seen for the track momentum resolution and for the cluster residual width (cluster - truth) in the TPC (which is what pointed me to this commit in the first place). Can you double-check ?

Don't hesitate to ask if you need more information from my side.

Best,

Hugo