STAR HardProbes PWG

[Yi Yang <yiyang0429 AT gmail.com>]

Dear Yuan,

Thanks a lot for the explanation and adding the summary page. The updated version of the paper proposal looks good to me. 

I have two minor suggestions: 

 - Add the explanations of open and solid circles on p11 and p12, it will avoid some confusions/questions (like mine). 

 - L16: D0 --> D^0

           RAA --> R_AA 

Good luck with PWGC preview!

Cheers,

Yi

On Fri, Apr 21, 2023 at 4:10 PM <suyuann AT mail.ustc.edu.cn> wrote:

Dear Yi,

 Thanks for the comments. The systematic uncertainty from TPC tracking efficiency has been checked, basically consistent with the results of 4-7% in Au+Au, the slight difference may due to the low multiplicity of final charged particles in isobar, which makes the detector has better response. And we will contact Yang Li for the light flavor hadron spectrum analysis in isobar, and a cross-check on the systematic uncertainties of TPC tracking efficiency between D0 and light hadrons will be done later.

 p11, "open circle" and "open diamond" indicate that the p+p reference results are not directly derived from experimental measurements, but are the result of extrapolation of measured data through different models.

 p12, "solid circle" and "open circle" are the R_cp results in isobar and Au+Au, respectively.

 A summary page has been added (p16), and please find the new version at the link below:

https://drupal.star.bnl.gov/STAR/blog/suyuann/PaperProposalD0isobar

Best regards,
Yuan

-----原始邮件-----
发件人:"Yi Yang" <yiyang0429 AT gmail.com>
发送时间:2023-04-20 15:07:15 (星期四)
收件人: "Ma, Rongrong" <marr AT bnl.gov>, "STAR HardProbes PWG" <star-hp-l AT lists.bnl.gov>
抄送: "suyuann AT mail.ustc.edu.cn" <suyuann AT mail.ustc.edu.cn>, ephy <ephy AT ustc.edu.cn>
主题: Re: [Star-hp-l] HP-pwg meeting Thursday (23rd Mar) 10 AM, BNL time

Hi Yuan,

In addition to Rongrong's suggestion, I have some minor comments for your consideration. 

  p9: Your TPC tracking systematics seems to be a bit small to me, could you please double check it and compare it to other analyses? 

  p11, p12: could you please remind me why some points are plotted as "open circle" and "open diamond"? 

  Please add a summary page for the main physics message of the analysis  in the end. 

I will be submit the request of PWGC preview in the meantime. 

Cheers,

Yi

On Wed, Apr 19, 2023 at 9:34 PM Ma, Rongrong via Star-hp-l <star-hp-l AT lists.bnl.gov> wrote:

Hello Yuan

Thanks for the very nice results. When you plot R_AA vs. Npart from Au+Au and Isobar, it seems like that the Isobar data points are below the Au+Au results, while they are quite consistent when plotted vs. centrality. If one compares the Jpsi Raa vs. Npart between Au+Au and Isobar (s9 of https://drupal.star.bnl.gov/STAR/files/HP_v6.pdf), there also seems a tendency that Isobar data points are below Au+Au data even though it is much less significant compared to D0. So, I am wondering if you can talk to Kaifeng and Yan, and ask them to prepare a plot of Jpsi Raa vs. centrality for Au+Au and Isobar. Then I think we can put the two scalings together (Raa vs. Npart, Raa vs. centrality) for both D0 and Jpsi, and see which one works better.  Indeed, for charged hadron above 5 GeV/c, it is very clear that Raa scales with Npart, but it does not mean charm quarks have to behave the same way as charged hadrons. 

Best

Rongrong

On Apr 19, 2023, at 6:48 AM, suyuann--- via Star-hp-l <star-hp-l AT lists.bnl.gov> wrote:

Hi Barbara, Nihar, Yi and all,

    The <N_part> and legend for isobars and Au+Au are added on R_AA vs pT figure. 

    For the paper preview, the image are resized and more details will be adjusted later, the conclusion is summarized into four points in the Summary part:

•            1. D⁰-meson productions are firstly measured at mid-rapidity (|y| < 1) in Isobar collisions.
•            2. N_bin-scale effect of the D⁰ p_T spectra between Isobar and Au + Au collision system is firstly observed.
•            3. The strong suppression D⁰ nuclear modification factor R_AA is also observed for p_T > 3 GeV/c in the central Isobar collisions.
•            4. No significant systematic dependence of D⁰ kinetic freeze-out properties in central collisions between Isobar and Au + Au collisions within uncertainties is observed.

           

           The point for pT of 2-3 GeV/c has been checked, the error bar of the data point between isobar 40-50% and AuAu 40-80% is touch with each other. An extra 

    40-50%/40-80% by direct yield ratio and R_AA ratio method in isobar is shown on Back up.

    Here is the corrected version paper proposal:   https://drupal.star.bnl.gov/STAR/system/files/Paper_Proposal_04192023.pdf

          If it's ok, we would like to push the results to PWGC preview.

Best,

Yuan

-----原始邮件-----
发件人:"Barbara Trzeciak" <barbara.trzeciak AT gmail.com>
发送时间:2023-04-11 19:35:45 (星期二)
收件人: suyuann AT mail.ustc.edu.cn
抄送: "Nihar Sahoo" <nihar AT rcf.rhic.bnl.gov>, "STAR HardProbes PWG" <star-hp-l AT lists.bnl.gov>, ephy <ephy AT ustc.edu.cn>
主题: Re: Re: [Star-hp-l] HP-pwg meeting Thursday (23rd Mar) 10 AM, BNL time

Hi Yuan,

thanks for the update. I think the comparison at similar <N_part> is interesting, though within the uncertainties the physics message is the same. We can discuss further towards the paper how best to present the results.

Please just add on the plots (or caption) what is the <N_part> for isobars and Au+Au, for each R_AA vs pT case you're showing. And add in the legend that the model prediction is for isobar.  

For the paper preview please improve quality of the plots and add conclusions of the paper. 

Slide 17 - do you know why the point for pT of 2-3 GeV/c is so much up ? It looks like quite a significant fluctuation up.

Cheers,

Barbara

On Fri, Apr 7, 2023 at 11:45 AM <suyuann AT mail.ustc.edu.cn> wrote:

Hi Barbara,

 Thanks for your nice comments and apologize for the late reply.

    For the first comment, we added one more plot to show the RAA vs pT with similar <N_part> in isobar and Au+Au collisions for comparison (the 0-10% in Isobar and 10-40% in Au+Au with <N_part> ~ 150).  It is difficult to have similar <N_part> for other centralities due to poor statistics, the 40-50% in Isobar and 40-80% in Au+Au with <N_part> ~ 40 are checked and shown in back up.

    For the second point, the dashed curves on the RAA figure (Fig. 8) show a Langevin dynamical model simulations for isobar collisions.

    Here is the new version paper proposal: https://drupal.star.bnl.gov/STAR/system/files/Paper%20Proposal_D0_isobar.pdf

Best,

Yuan

-----原始邮件-----
发件人:"Barbara Trzeciak" <barbara.trzeciak AT gmail.com>
发送时间:2023-04-05 17:56:14 (星期三)
收件人: "Nihar Sahoo" <nihar AT rcf.rhic.bnl.gov>, "STAR HardProbes PWG" <star-hp-l AT lists.bnl.gov>
抄送: suyuann AT mail.ustc.edu.cn, ephy <ephy AT ustc.edu.cn>
主题: Re: [Star-hp-l] HP-pwg meeting Thursday (23rd Mar) 10 AM, BNL time

Hi Yuan,

thank you for the nice paper proposal.

The results look good and stable. 

I have only a request regarding the R_AA plots vs pT where you compare to the Au+Au result. It would be better to compare the two results at similar <N_part> rather than the same centrality bin. Same centrality in isobar corresponds to a different medium than in Au+Au. 

Also, do you have some model predictions for isobar ?

Cheers,

Barbara

On Thu, Mar 23, 2023 at 5:32 AM Nihar Sahoo via Star-hp-l <star-hp-l AT lists.bnl.gov> wrote:

Hello Yuan,

Thank you for providing all these detailed information on your nice
analysis.
we will discuss with Rongrong to find a next available date for PWGC
preview and inform you soon.

Regards
Nihar

On 2023-03-23 09:44, suyuann AT mail.ustc.edu.cn wrote:
> Hello Conveners and All,
>
> We would like to request PWGC preview for the results about the D0 Raa
> measurement in isobar collisions. The analysis note is listed below.
> Can you help us make this request?
> Here is the analysis note:
> https://drupal.star.bnl.gov/STAR/system/files/AnaNote_D0_Isobar_0.pdf
> and a very preliminary paper draft:
> https://drupal.star.bnl.gov/STAR/system/files/D0_RAA_paper_draft_v0.pdf
>
> You can find our web page of paper proposal and PWG reports at the
> below link:
> https://drupal.star.bnl.gov/STAR/blog/suyuann/Measurements-inclusive-D0-meson-production-Isobar-collisions-200-GeV
>
> Best,
> Yuan
>
>> -----原始邮件-----
>> 发件人: "Nihar Sahoo via Star-hp-l" <star-hp-l AT lists.bnl.gov>
>> 发送时间: 2023-03-20 21:18:35 (星期一)
>> 收件人: "Star-hp L" <Star-hp-l AT lists.bnl.gov>
>> 抄送:
>> 主题: [Star-hp-l] HP-pwg meeting Thursday (23rd Mar) 10 AM, BNL time
>>
>> Hello All,
>>
>> We will have our HP-pwg meeting this Thursday (23rd Mar) at 10 AM EDT.
>>
>> This week we have the following items
>> 1. Discussion on STAR highlights presentation slides for HP2023
>> 2. Final discussion on the STAR preliminary results/physics for HP2023
>> 3. Discussion on Run23
>>
>> QM2023 deadlines (From Rongrong's PWGC email)
>> * April 3rd: deadline for express of interests to PWG via email.
>> Please
>> submit a title and a brief abstract on what you propose to present.
>> * April 3rd – 17th: merging discussion within/across PWGs, and PAs
>> submit merged abstracts to Drupal after converging
>> * April 17th – 24th: PWG comments and approval
>> * April 24th – May 1st: discussion and approval within star-talks. All
>> the abstracts will be submitted centrally to the conference by PAC.
>>
>> If you have anything to discuss, please let us know.
>>
>> HP working group weekly meeting info:
>> https://drupal.star.bnl.gov/STAR/pwg/Hard-Probes/Weekly-HP-PWG-meeting
>>
>>
>> Join ZoomGov Meeting
>> https://urldefense.com/v3/__https://bnl.zoomgov.com/j/1611419615?pwd=VW1hNm43ZDd5d2EvK2R4aEJsQ2ZNZz09__;!!P4SdNyxKAPE!Bt7QXDvYaMuJdkwjbV3xn06imayvfP_lXAJJdKRJA-jEUjPzkEuU6fIbkB8YspOMjKx0VT4aw-PsbJEXSxWwaqO47Rts$
>>
>> Meeting ID: 161 141 9615
>> Passcode: 744968
>>
>>
>> Regards,
>> Barbara, Yi and Nihar
>> _______________________________________________
>> Star-hp-l mailing list
>> Star-hp-l AT lists.bnl.gov
>> https://lists.bnl.gov/mailman/listinfo/star-hp-l
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