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Re: [Sphenix-maps-l] [Sphenix-hf-jets-l] Bplus reconstruction update

From: "Huang, Jin" <jhuang AT bnl.gov>
To: Xiaolong Chen <xlchen AT lbl.gov>, "sphenix-hf-jets-l AT lists.bnl.gov" <sphenix-hf-jets-l AT lists.bnl.gov>, sphenix-maps <sphenix-maps-l AT lists.bnl.gov>
Subject: Re: [Sphenix-maps-l] [Sphenix-hf-jets-l] Bplus reconstruction update
Date: Fri, 2 Jun 2017 20:23:49 +0000

That is very interesting development. And thanks for working out the first exclusive B-meson projection for sPHENIX!

Few questions and comments:

· Slide 6: TOF availability. Is the difference between Hybrid PID and Clean PID comes from the TOF efficiency? And track missing TOF is dropped in the Clean sample? It is interesting to find the Clean PID sample has worse performance than hybrid, but that is probably because I am not sure about their definition.

· Slide 7/13: It is great to know the precision is good in the mid-pT region, even in central collisions with or without PID.

· Slide 8:

o May I confirm mass cuts on both B+ and D0 vertexes are used for these studies? Alternatively, would the two masses be useful to be used as an additional TMVA variables?

o May I confirm a guess that PID detector helped less in the exclusive B+ analysis (when compared with the non-prompt-D0 analysis) is that, the B+ invariant mass cut automatically selected higher momentum track candidates?

· For final plots, please use the newly appointed sPHENIX style set: https://github.com/sPHENIX-Collaboration/macros/tree/master/macros/sPHENIXStyle

Again, thanks for the nice study!

Cheers

Jin

______________________________

Jin HUANG

Associate Physicist

Brookhaven National Laboratory

Physics Department, Bldg 510 C

Upton, NY 11973-5000

Office: 631-344-5898

Cell: 757-604-9946

______________________________

From: sPHENIX-HF-jets-l [mailto:sphenix-hf-jets-l-bounces AT lists.bnl.gov] On Behalf Of Xiaolong Chen
Sent: Friday, June 2, 2017 10:00 AM
To: sphenix-hf-jets-l AT lists.bnl.gov; sphenix-maps <sphenix-maps-l AT lists.bnl.gov>
Subject: [Sphenix-hf-jets-l] Bplus reconstruction update

Hi All,

Please find the direct B+ reconstruction in the link:

http://portal.nersc.gov/project/star/xlchen/sPhenix/Bpm/Ana/slides/Bpm_sPHENIX_170602.pdf

Any comments?

Thanks and best regards,

Xiaolong Chen

[Sphenix-maps-l] Bplus reconstruction update, Xiaolong Chen, 06/02/2017
- Re: [Sphenix-maps-l] [Sphenix-hf-jets-l] Bplus reconstruction update, Huang, Jin, 06/02/2017
  - Re: [Sphenix-maps-l] [Sphenix-hf-jets-l] Bplus reconstruction update, Xiaolong Chen, 06/03/2017