sPHENIX discussion of physics

["Huang, Jin" <jhuang AT bnl.gov>]

Intro: 

See Cameron's email yesterday and check out new KFParticle tutorial: https://github.com/sPHENIX-Collaboration/analysis/blob/master/HF-Particle/KFParticle_sPHENIX/HFReco.C#L90

 

 

PFJet Update : Antonio Carlos Oliveira da Silva

 

Slide 3: 

Antonio: pions were generated with fixed eta and phi

 

Slide 5:

E_total is the total cluster energy in a layer

 

Slide 13: 

Joe: double check whether it is an outer HCal only problem from field bending

Jin: weight of front-back surface position averae is probably energy and shower dependent. Later we might want to do a JER vs weighting parameter scan to pick one that optimize the jet performance overall 

 

Slide 19:

Antonio: "unmatched EM particles" in the PFJet nominature means EMCal cluster which could come from a hadronic particle shower too

 

Slide 20: 

Jin: please double check whether the shower is contained in the calorimeter: ie. sum all topo clusters. That is to set the goal post for the algorithm development: whether the peak near zero energy bin is due to (1) shower did not physically contained by calos (2) cluster splitted 

 

 

 

Lambda_c update Joseph Bertaux 

 

Cameron/Charles: newer Lc simulation files. 

To be post to the Lambda c mattermost public channel: https://chat.sdcc.bnl.gov/sphenix/channels/hf-lc 

 

Jin: 

1. useful to spread expertise
2. good to get a feeling aboud the statistics for week of run in Run24 using information in the 2019 Lc note
3. We also need to test with the new reduced track object from Alex 

 

Zhaozhong: would the pKs0 channel be used?

Xin: Lc three body definitely need MVTX, but K0s could decay far away

 

 

 

 

______________________________

 

Jin HUANG

 

Physicist, Ph.D.

Brookhaven National Laboratory

Physics Department, Bldg 510 C

Upton, NY 11973-5000

 

Office: 631-344-5898

Cell:   757-604-9946

______________________________

 

From: Huang, Jin <jhuang AT bnl.gov>
Sent: Tuesday, February 13, 2024 3:02 PM
To: Sphenix-upsilons-l AT lists.bnl.gov; sphenix-hf-Jets-l AT lists.bnl.gov
Cc: sphenix-physics-l AT lists.bnl.gov
Subject: [reminder] Heavy Flavor/Quarkonium TG meeting Wed Feb 14 at 1:30PM ET

 

Dear all

 

Valentine special :) please joint our next Heavy Flavor/Quarkonium TG meeting Wed Feb14 at 1:30PM ET. 

Currently on the agenda at https://indico.bnl.gov/event/22355/  . The topics on agenda are
 
• PF jet update from Anthony

• Lc analysis update from Joseph 

The zoom link is bnl.zoomgov.com/j/1613938007?pwd=QjYzUnpYQ2xNZWZLSy9qd3Z4dFpzZz09
 
We look forward to talking to you!

Marzia, Cameron, Jin, and Tony

 

 

 

______________________________

 

Jin HUANG

 

Physicist, Ph.D.

Brookhaven National Laboratory

Physics Department, Bldg 510 C

Upton, NY 11973-5000

 

Office: 631-344-5898

Cell:   757-604-9946

______________________________