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[Sphenix-physics-l] [minutes] [Mar 9 Wed 9:30AM ET] Joint HF/Quarkonium TG meeting

From: Hideki Okawa <Hideki.Okawa AT cern.ch>
To: "sphenix-hf-jets-l AT lists.bnl.gov" <sphenix-hf-jets-l AT lists.bnl.gov>, "Sphenix-upsilons-l AT lists.bnl.gov" <Sphenix-upsilons-l AT lists.bnl.gov>
Cc: "sphenix-physics-l AT lists.bnl.gov" <sphenix-physics-l AT lists.bnl.gov>, "sphenix-maps-l AT lists.bnl.gov" <sphenix-maps-l AT lists.bnl.gov>
Subject: [Sphenix-physics-l] [minutes] [Mar 9 Wed 9:30AM ET] Joint HF/Quarkonium TG meeting
Date: Thu, 10 Mar 2022 14:21:01 +0000

Introduction & Upcoming plans

We now have the inclusive jet sample as well (1M events).

It is time to resume the b-tag studies.

We would like to call for volunteers to work on associating

G4 particles to reconstructed tracks. Tasks are:

1) Store relevant information

2) Develop an algorithm to do the matching

If you are interested in the task(s), please contact us.

Next meeting will be in 2 weeks as usual (Mar 23). We will

skip the meeting on Apr 6 due to QM22 and resume on

Apr 20.

MDC2 status - Cameron Dean

Added 4 minIO interfaces. Hopefully this fixes the crash issue.

DST_TRUTH_G4HITS is eating too much space and was deleted.

We will discuss which truth info to keep at the next simulation

meeting on Mar 15.

p.3

Hideki: What does Jet R=4 mean here? I guess 4 means 0.4.

Cameron: This means that "R=0.4 jet pt>30 GeV" was used for

the event triggering.

Joseph: Could you post these tables on MatterMost?

Cameron: Will do. (Now posted on the MDC2 channel)

p.4

Tony: Which event filter was used?

Cameron: Filtered for ccbar.

Joe: hardQCD or Minbias?

Cameron: hardQCD

Tony: OK, just triggered events. Pileup considered?

Cameron: Right

Tony: ~150 tracks look insane?

Cameron: Largely from pileup.

Tony: Then, mostly TPC tracks pointing randomly in z. How about

adding the MVTX cut?

Cameron: Will do, but I have to rerun the jobs for that.

Jin: Does the truth association still need work?

Cameron: Yes, I got nowhere for that.

==> Please look at the introduction part of the minutes calling for

the volunteers

Marzia: How about doing the association in angle and momentum?

Tony: Possible but not trivial

EvtGen updates (verbal) -- Zhaozhong Shi

Z.Z.: EvtGen compiled ok, but crashed in Fun4All. EvtGen is implemented

in Pythia8.

Jin: Why did you implement in Pythia8? Association to G4 is the goal.

Z.Z.: I didn't know how to run it directly.

Cameron: That was my suggestion. Doesn't G4 use Pythia6 decayer?

Jin: This is sPHENIX's own implementation. We should just replace

Pythia6 decayer in the sPHENIX code to EvtGen.

[Sphenix-physics-l] [minutes] [Mar 9 Wed 9:30AM ET] Joint HF/Quarkonium TG meeting, Hideki Okawa, 03/10/2022