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  • From: Nihar Sahoo <nihar AT rcf.rhic.bnl.gov>
  • To: STAR HardProbes PWG <star-hp-l AT lists.bnl.gov>
  • Subject: Re: [Star-hp-l] STAR presentation by Veronika Prozorova for Quark Matter 2023 submitted for review
  • Date: Sun, 27 Aug 2023 17:37:48 +0530

Hello Veronika,

I find your poster v3 in good shape and don't have any comments.

But, You may consider to introduce in your motivation on what observable you plan to measure.
Something like if you could include STAR HFR v2 published result's plot.
I think this part is missing in your motivation.

With this I sign off.

Cheers
Nihar

On 2023-08-27 11:37, Veronika Prozorova via Star-hp-l wrote:
Hello Rongrong,

Thank you for the comments! Please, find the new version here:
https://drupal.star.bnl.gov/STAR/system/files/PosterQM23_Prozorova_ver3.pdf

Best wishes,
Veronika

сб, 26 авг. 2023 г. в 23:38, Ma, Rongrong <marr AT bnl.gov>:

Hello Veronika

Thanks for addressing my comments. The new version looks very nice.
I have only a few additional minor comments.

RESULTS
- In Fig. 3, please remove the comma after "p_T" in the x-axis title

- function (Figure 4) -> function (Fig. 4)
- efficiencies (Figure 5) -> efficiencies (Fig. 5)
- Add "Au+Au \sqrt{s_NN} = 54.4 GeV" to both panels of Fig. 5
- In the left panel of Fig. 5, I suggest to use option "PL" in
legend for the data points in different centrality bins, i.e. remove
the colored box around data points in the legend, since you already
have the box indicated as "sys. uncertainty"

Best
Rongrong

On Aug 26, 2023, at 4:38 PM, Veronika Prozorova
<v.d.prozorova AT gmail.com> wrote:

Hello Rongrong,

Thank you very much for your comments! I have implemented them and
uploaded the new version under the new entry:

https://drupal.star.bnl.gov/STAR/system/files/PosterQM23_Prozorova_ver2.pdf


Regarding your question about Figure 3. This behaviour is due to the
cuts we are using for the electron identification. For pT < 1.25
GeV/c we use TPC and TOF, for 1.25 < pT < 1.5 GeV/c we use TPC, TOF
and BEMC, for pT >1.5 we use TPC, BEMC and TOF hybrid mode to get
more statistics. More information here:

https://drupal.star.bnl.gov/STAR/system/files/HFE54.4GeV_6Apr2023.pdf

As it would take a lot of space to explain this behavior I added a
small note regarding the BEMC only as it catches the eye the most.

Best regards,
Veronika

пт, 25 авг. 2023 г. в 17:47, Ma, Rongrong via Star-hp-l
<star-hp-l AT lists.bnl.gov>:
Hello Veronika

I was asked by the STAR management to take a look at your poster.
Here are some comments for your consideration:

ABSTRACT
- Studying heavy flavor can -> Studying heavy-flavor production in
heavy-ion collisions (HIC) can
- Quark-Gluon Plasma (QGP) -> Quark-Gluon Plasma (QGP) created in
these collisions
- One way to study the production of heavy quarks -> One way to
study heavy quarks

HEAVY-FLAVOR ELECTRONS
- semi-leptonic decays of open heavy-flavor hadrons
- It is a pT dependent fraction of electrons from both D and B
hadron decays. -> Relative contributions of D and B hadron decays
depend on electron p_T.
- As HFE have higher -> As semi-leptonic decays have higher
- remove "of open heavy-flavor hadrons"
- I do not think you need to introduce the concept of non-photonic
electrons, which could cause confusion. I suggest to merge second
and third bullets, and write Eq. (1) as: N^HFE = (N^incl * purity -
N^PE/𝜀^PE)/(𝜀^total) - N^HDE
- total efficiency of identified electrons -> total efficiency of
electron identification and reconstruction
- are hadron-decayed electrons: 𝜌 -> are hadron-decayed electrons
from 𝜌
- e^PE sources -> N^PE sources
- remove "direct"

STAR DETECTOR
- study properties of strongly-interacting matter -> study
properties of the QGP
- Particle momentum reconstruction and
- add an empty space after "dE/dx,"

PHOTONIC ELECTRONS
- are subtracted statistically from the inclusive electrons using
invariant mass method -> are identified using the invariant mass
method and subtracted statistically from inclusive electrons
- Figure 2, caption: PE pure sample for -> photonic electrons in
- 𝜋0 -> 𝜋^0 (0 should be the superscript)

RESULTS
- In Fig. 1, there are some distinct features: i) a bump around 1
GeV/c, ii) a sudden drop around 1.4 GeV/c, and iii) another bump
around 1.6 GeV/c. Do you understand these features? Are they related
to trigger bias? It will be good if you can add some explanations.
- Figure 1, caption: add a comma before "for"
- remove "In order to evaluate hadron contamination the"
- were fitted with multi-Gaussian -> are fitted with a
multi-Gaussian
- (Figure 4). This is needed to -> (Figure 4), to
- Figure 4: add "Au+Au \sqrt{s_NN} = 54.4 GeV" to both panels
- TOF, BEMC -> TOF and BEMC
- calculated from data using pure photonic electron sample ->
calculated using pure electron sample in data
- Figure 5, left panel: the legend indicates the systematic
uncertainty is displayed as filled gray box, while I can only see
open colored boxes around data points. Please make them consistent.

CONCLUSION
- Heavy-flavor electrons are a powerful -> Heavy-flavors are a
powerful
- towards N^PE evaluation -> towards N^HFE evaluation
- v2 -> v_{2}
- add the reference to HFE v2 paper

REFERNECE
- Unify the reference style

Best
Rongrong

On Aug 18, 2023, at 8:08 AM, webmaster--- via Star-hp-l
<star-hp-l AT lists.bnl.gov> wrote:

Dear Star-hp-l AT lists.bnl.gov members,

Veronika Prozorova (v.d.prozorova AT gmail.com) has submitted a
material for a
review, please have a look:
https://drupal.star.bnl.gov/STAR/node/64755 [1]

Deadline: 2023-09-03
---
If you have any problems with the review process, please contact
webmaster AT www.star.bnl.gov
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[2] https://lists.bnl.gov/mailman/listinfo/star-hp-l
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