STAR HardProbes PWG

[Tong Liu <tong.liu AT yale.edu>]

Hi Nihar,

Please use this link instead: https://drupal.star.bnl.gov/STAR/node/59797. For whatever reason I created two duplicate links; sorry for the confusion.

Tong Liu

Ph.D. Student '2023 

Physics Dept., Yale University

Tel: 203-435-2130

On Sat, Jul 16, 2022 at 12:56 AM Nihar Sahoo <nihar AT rcf.rhic.bnl.gov> wrote:

Hello Tong,

Can you please send your updated proceedings Drupal submission link?
It seems this link doesn't work from my side.
https://drupal.star.bnl.gov/STAR/node/59798


Nihar


On 2022-07-15 23:22, Tong Liu wrote:
> Hi Yi,
>
> Thanks for the confirmation. Nihar, Barbara, and Sooraj, could you
> please also take a look and check for any further comments? Thanks!
>
> Tong Liu
> Ph.D. Student '2023
> Physics Dept., Yale University
>
> Tel: 203-435-2130
>
> On Thu, Jul 14, 2022 at 5:01 AM Yi Yang <yiyang AT ncku.edu.tw> wrote:
>
>> Dear Tong,
>>
>> Thanks a lot for the updated version and replies.
>> I don't have any further comments on your nice proceedings.
>>
>> Cheers,
>> Yi
>>
>> +++++++++++++++++++++++++++++++++++++++++++++++++++
>> Yi Yang, Associate Professor
>> Department of Physics
>> National Cheng Kung University
>> Tainan, 701 Taiwan
>> E-Mail: yiyang AT ncku.edu.tw
>> Tel: +886-6-2757575 ext.65237
>> Fax: +886-6-2747995
>> Group Web: http://phys.ncku.edu.tw/~yiyang [1]
>> +++++++++++++++++++++++++++++++++++++++++++++++++++
>>
>> On Sun, Jul 10, 2022 at 12:32 PM Tong Liu <tong.liu AT yale.edu> wrote:
>>
>> Hi Yi and all,
>>
>> Thanks for the comments; I have a few replies attached below. I
>> agree with those not listed/mentioned here and I've already
>> implemented them. Please find an updated version on drupal, and see
>> if you have further comments. Thanks!
>>
>> - L47: Just for my own education, why is it 5.1 GeV/c? Not 5.0?
>>
>> The reason is kinda trivial: The pp reference we are comparing
>> against is binned that way. It has a bin from 4.8 to 5.1 GeV/c, and
>> one from 5.1 to 6. We would’ve happily used 5 GeV if the reference
>> were binned that way; and since it doesn’t make much difference
>> anyway, in the HG-PYTHIA simulation we went back to the 5 GeV/c
>> threshold.
>>
>> - Is it possible to move Fig 1 after L58? It seems better (to me)
>> to see the descriptions before the plot.
>>
>> Maybe I’m just bad at latex, but I can’t find a way to do so…
>>
>> - L77 - 79: Just for my own education, I think the RAA results
>> (data points in Fig.1) are efficiency-corrected, right? Then, why do
>> you need simulation including detector effects?
>>
>> Yes, but the random nature of detector inefficiency means the
>> centrality ranking might be shuffled in real data; e.g. an events
>> who has 31 truth-level tracks but loses 4 of them could end up in a
>> more peripheral class than another with 30 tracks but only loses 2.
>> Since refmult mostly relies on low-pt tracks and peripheral isobar
>> events already don’t have many tracks, this effect might’ve been
>> substantial already.
>>
>> Tong Liu
>> Ph.D. Student '2023
>> Physics Dept., Yale University
>>
>> Tel: 203-435-2130
>>
>> On Thu, Jul 7, 2022 at 5:58 AM Nihar Sahoo <nihar AT rcf.rhic.bnl.gov>
>> wrote:
>> Hi Tong,
>>
>> Can you please send your latest proceedings link if you have
>> implemented
>> Yi's comment?
>>
>> Thank you
>> Nihar
>>
>> On 2022-07-05 11:46, Yi Yang via Star-hp-l wrote:
>>> Hi Tong,
>>>
>>> Sorry for the very late reply and thanks a lot for the reminder (I
>>> almost forgot this, very sorry about that).
>>>
>>> Thanks a lot for the very nice proceedings.
>>> I only have some very minor comments/suggestions for your
>>> consideration.
>>> - L7: in our community --> in heavy-io community (is it better?
>>> Totally up to you.)
>>> - L9: Do you need this bracket? I would remove it.
>>> - L13: high pT --> high transverse momenta (pT)
>>> - L14: low transverse momenta (pT) --> low pT
>>> - L25: Add some references from the BES program?
>>> - L33: It would be good to specify the collision systems, say
>>> Isobar, Au+Au, d+Au, and Cu+Cu.
>>> - L34: In section 3 we --> in section 3, we
>>> - L35: distribution --> distributions
>>> - L36: ratio --> ratios
>>> - L42: in [2] --> in Ref. [2]
>>> - L44: from [3] --> from Ref. [3]
>>> - L47: Just for my own education, why is it 5.1 GeV/c? Not 5.0?
>>> - Is it possible to move Fig 1 after L58? It seems better (to
>> me)
>>> to see the descriptions before the plot.
>>> - L48: the quality -> the high statistics (? Up to you)
>>> - L53: [3] [4] [5] --> [3 - 5]   (I think you can just use
>> \cite{a,
>>> b, c}
>>> - L55: Ru+Ru and Zr+Zr RAA results --> The RAA results from
>> Ru+Ru
>>> and Zr+Zr   (Or "The Ru+Ru and Zr+Zr RAA results)
>>> - L67: in [6] --> in Ref. [6]
>>> - L73: I would use "0.2 GeV/c" (same unit as others).
>>> - L74: 5 GeV --> 5 GeV/c    (not 5.1 GeV/c ?)
>>> - L77 - 79: Just for my own education, I think the RAA results
>>> (data points in Fig.1) are efficiency-corrected, right? Then, why
>> do
>>> you need simulation including detector effects?
>>> - L88: in [10] --> in Ref. [10]
>>> - is it possible to move Fig.2 after L93? (up to you, too)
>>> - L101: I am not sure if the proceedings from the same
>> conference
>>> is a good reference. It is probably okay to link to his
>> presentation?)
>>>
>>> - L101: Isobar spectra --> the Isobar spectra
>>> - L114: similar comments as "Haojie's proceedings"
>>> - L119: "trigger" particles --> "triggered" particles
>>> - L120: trigger particles --> triggered particles
>>> - L131: Add a reference of the STAR forward upgrade (from
>> previous
>>> QM?)
>>>
>>> Cheers,
>>> Yi
>>>
>>> On Tue, Jul 5, 2022 at 12:09 PM Tong Liu via Star-hp-l
>>> <star-hp-l AT lists.bnl.gov> wrote:
>>>
>>>> Hi Barbara, Nihar & all,
>>>>
>>>> I know there are still a few weeks before QM proceedings are due,
>>>> but could you please take another look at my latest version to
>> see
>>>> if there are more comments? I would like to move forward with it
>> and
>>>> get it out of the way as fast as we can. Thanks!
>>>>
>>>> Tong Liu
>>>> Ph.D. Student '2023
>>>> Physics Dept., Yale University
>>>>
>>>> Tel: 203-435-2130
>>>>
>>>> On Mon, Jun 20, 2022 at 11:59 PM Tong Liu <tong.liu AT yale.edu>
>> wrote:
>>>>
>>>> Hi Barbara,
>>>>
>>>> Thanks for your comments. I have a few responses to some of them;
>> I
>>>> have applied the rest of them to the updated version on drupal.
>>>>
>>>> L57-58: "note that the Zr+Zr RAA is systematically slightly
>> higher
>>>> due to smaller Npart" - this is not very clear, do you mean that
>> the
>>>> average Npart in a given centrality bin is smaller for Zr+Zr
>> compare
>>>> to Ru+Ru ?
>>>>
>>>> Yes you’re right. I added “at the same centrality bin”.
>>>>
>>>> L104: medium production depends -> medium properties depend (?
>> not
>>>> fully sure what you wanted to say here)
>>>>
>>>> What we show in this chapter is the soft particles, which are
>>>> produced by QGP hadronization. So the yield presented here is the
>>>> “medium production”.
>>>>
>>>> L131: η coverage -> the η coverage
>>>>
>>>> I’m not sure I get what you’re trying to say… my original
>> says
>>>> “the extended eta coverage offered by the new STAR forward
>>>> upgrade”
>>>>
>>>> L133: studies to understand -> studies that help to understand
>>>>
>>>> That sounds a bit weird to me... I changed it to “studies that
>>>> improve our understanding on ”
>>>>
>>>> Tong Liu
>>>> Ph.D. Student '2023
>>>> Physics Dept., Yale University
>>>>
>>>> Tel: 203-435-2130
>>>>
>>>> On Sat, Jun 18, 2022 at 5:36 AM Barbara Trzeciak
>>>> <barbara.trzeciak AT gmail.com> wrote:
>>>>
>>>> Hi Tong,
>>>>
>>>> Nice proceedings.
>>>> Please see my minor comments for your consideration below.
>>>>
>>>> Cheers,
>>>> Barbara
>>>>
>>>> L29: "from different systems" -  it sounds redundant here
>>>> L31: evolves -> evolve
>>>> L33-34: hadron spectrum at 200 GeV -> hadron spectra at
>> sqrt{s_NN} =
>>>> 200 GeV
>>>> L48: above 5.1 GeV -> above 5.1 GeV/c
>>>> L49: 5% centrality bins -> 5%-wide centrality bins
>>>> L55: of collision system -> of the collision system
>>>> L57-58: "note that the Zr+Zr RAA is systematically slightly
>> higher
>>>> due to smaller Npart" - this is not very clear, do you mean that
>> the
>>>> average Npart in a given centrality bin is smaller for Zr+Zr
>> compare
>>>> to Ru+Ru ?
>>>> L61: effects becomes -> effects become
>>>> L65: up to 80% -> from 60% up to 80% peripheral events
>>>> L65:  and deviates ->  and deviate
>>>> L66: deviation at - deviation in
>>>> L67: HG-PYTHIA method -> HG-PYTHIA toy model
>>>> L75: >5 GeV charged particles -> charged particles with pT > 5
>> GeV/c
>>>> FIg. 1 caption: above 5.1 GeV -> above pT of 5.1 GeV/c
>>>> Fig. 1 caption: HG-PYTHIA simulation modified from [6], see text
>> for
>>>> detail ->HG-PYTHIA simulations modified from [6] are presented as
>>>> shaded bands, see text for detail.
>>>> L82:  of medium production ->  of the produced medium (?)
>>>> L85: the raw ratio -> the ratio of raw yields
>>>> L86: reveal quite some physics -> provide physics information
>>>> Fig 2 caption: collisions, binned in centrality -> collisions as
>> a
>>>> function of pT, in different centrality classes
>>>> L88: PID -> particle identification
>>>> L92:  a larger Npart and Ncoll ratio ->  larger Npart and Ncoll
>>>> ratios
>>>> L93: in more peripheral collisions -> with increasing centrality
>>>> L96: are higher than that -> is higher than that
>>>> L97: across centrality -> across centralities
>>>> L103: medium production depends -> medium properties depend (?
>> not
>>>> fully sure what you wanted to say here)
>>>> L106: wouldn’t -> would not
>>>> L108:  54 GeV -> \sqrt{s_NN} =  54 GeV
>>>> L131: η coverage -> the η coverage
>>>> L133: studies to understand -> studies that help to understand
>>>> L135: rely on -> depend on
>>>> L137: initial geometry -> the initial geometry
>>>> L138: a “suppression” -> maybe: R_AA < 1
>>>> L139-140: remove "comparisons of"
>>>> L140: particle yields -> particle yield ratios
>>>> L140: system -> systems
>>>> L141: a centrality-dependent ratio -> centrality dependence
>>>> L146: was found -> is found
>>>>
>>>> On Sat, Jun 18, 2022 at 12:01 AM Tong Liu via Star-hp-l
>>>> <star-hp-l AT lists.bnl.gov> wrote:
>>>>
>>>> Hi Nihar,
>>>>
>>>> Thanks to the comments, I have implemented them and posted them
>> on
>>>> drupal. The link is kinda funny probably because I created a
>>>> duplicate entry, so please find the pdf here:
>>>>
>>>
>>
> https://drupal.star.bnl.gov/STAR/system/files/QM22_Proceeding_TongLiu%20%281%29_0.pdf
>>>>
>>>> Please responses to some your comments below:
>>>>
>>>> Line#25:  "dependencies" on what? like system size, Temperature,
>>>> muB. Need to
>>>>
>>>> mention what are those?
>>>>
>>>> The dependencies I’m mentioning are system size and collision
>>>> energies, which I talk about in the next sentence. I also
>> rephrased
>>>> the next sentence a bit to make it more coherent.
>>>>
>>>> Line#63 ":..note that the Zr+Zr RAA is
>>>>
>>>> systematically slightly larger due to smaller Npart,"-> I can see
>>>> both
>>>>
>>>> Ru and Zr RAA are consistent within uncertainty. Hence this
>>>> statement is
>>>>
>>>> not correct. Please remove this.
>>>>
>>>> I see what you’re trying to say, but the uncertainty you see
>> here
>>>> is mostly systematic, hence common across isobar species, and
>> should
>>>> be canceled when comparing Ru against Zr, as is done in section
>> 3.
>>>> Therefore one should only focus on the central value here.
>>>> Line#150: "…found, photonuclear processes with high
>> multiplicity
>>>> .." ->
>>>>
>>>> "found in the photonuclear processes with high multiplicity …"
>>>>
>>>> The latter part of the sentence is talking about future
>>>> measurements. That being said, since you removed the “high
>>>> multiplicity” part in Sec. 4, I removed the corresponding
>>>> statement here as well– though we need to confirm with
>> Prithwish
>>>> and Nicole.
>>>>
>>>> Line#151: "…help us understand …" -> "…help us to
>>>> understand…"
>>>>
>>>> I believe the “to” is optional here, and since we are short
>> on
>>>> space anyway I suggest we leave it as is.
>>>>
>>>> Tong Liu
>>>> Ph.D. Student '2023
>>>> Physics Dept., Yale University
>>>>
>>>> Tel: 203-435-2130
>>>>
>>>> On Sun, Jun 5, 2022 at 11:05 AM Nihar Sahoo via Star-hp-l
>>>> <star-hp-l AT lists.bnl.gov> wrote:
>>>> Hello Tong,
>>>>
>>>> Please find below my 1st round of comments on your nice
>> proceedings.
>>>>
>>>> Line#8: To address these open questions we -> "To address these
>> open
>>>>
>>>> questions, we…"
>>>> Line#12-16: Can you combine these three sentences into one and
>> avoid
>>>>
>>>> repeating "we"?
>>>> Line#19-23: "Lastly, we present…at RHIC" -> "In addition, we
>>>> present the
>>>> measurement of particle production and long-range di-hadron
>>>> correlations
>>>> in photonuclear processes in gamma+Au events using
>> ultra-peripheral
>>>> Au+Au collisions at RHIC." Something like this. To make it
>> concise
>>>> in
>>>> the abstract.
>>>>
>>>> Line#25: "Since the discovery of the quark-gluon plasma(QGP)"
>> Give
>>>> a
>>>> reference here.
>>>> "dependencies" on what? like system size, Temperature, muB. Need
>>>> to
>>>> mention what are those?
>>>> Line#29: "RHIC doesn’t only provide us with a large and
>> flexible
>>>> range
>>>> of energies.."-> "RHIC provides a wide range of collision
>> energies
>>>> and
>>>> variety of system size covering…"
>>>>
>>>> Line#31: "Further, ensembles with…" -> "Furthermore, the
>> collision
>>>>
>>>> system with …" end with a period.
>>>> Line#34: "jet quenching and flow " are not medium properties.
>> Like
>>>>
>>>> "flow" and "collectivity" are the same properties of QGP.
>>>> Please rephrase this sentence,
>>>> LIne#37:-38 "For the first two sections, we focus on …spectrum"
>>>> Not
>>>> needed and you can drop it. As you going through Section-2 and -3
>>>> individually in next sentences.
>>>> Line#38: "...the high-pT spectrum and show the nuclear
>> modification
>>>> (RAA)… hard partons in the medium. " ->"… the high-pT charged
>>>> hadrons
>>>> spectra and compare their nuclear modification factor (RAA) in
>>>> different
>>>> collision systems".
>>>> LIne#40: "Then in section 3…" -> "In Section 3,…"
Line#42:
>>>> "Finally in
>>>> section 4,…" ->" Finally, in section-4,.."
>>>>
>>>> Section-2 title:
>>>> I would not say " hard partons" because we probe hard partons
>> using
>>>> jet
>>>> measurement, here we measure "inclusive charged hadrons".
>>>> Line#47: "…event and …" -> "…event, and …" Line#51:
>>>> "…high-pT partons
>>>> …" -> "…high-pT charged hadrons …" (for reason see
>>>> above)
Line#54: "…we
>>>> are able to perform…" -> ", we perform…"
>>>> Line#55: "&" -> and
Line#63 ":..note that the Zr+Zr RAA is
>>>> systematically slightly larger due to smaller Npart,"-> I can see
>>>> both
>>>> Ru and Zr RAA are consistent within uncertainty. Hence this
>>>> statement is
>>>> not correct. Please remove this.
>>>> Line#69: "However, our data in peripheral collisions show that
>> RAA
>>>> starts  to decrease again beyond 60%,
>>>> " -> However, the values of RAA in Isobar collisions with Npart<
>> 20
>>>> starts to decrease up to 80%,…" LIne#71: "Currently our
>> suspicion
>>>> is
>>>> …event selection and geometry biases.." -> I would not mention
>> as
>>>> a
>>>> suspicion. How about. "The event selection and geometrical biases
>>>> may
>>>> contribute to this deviation at peripheral events in Isobar
>>>> collisions
>>>> like demonstrated by the HG-PYTHIA method in …"
Can you
>> please
>>>> inform
>>>> about this HG-PYTHIA?
>>>> LIne#85: …more direct properties …" Can you please mention
>> what
>>>> are
>>>> those "direct properties" of the medium? Line#94-96: This
>> statement
>>>> needs a citation.
>>>> Line#101-102: "We hope to study the ratio…" -> "We plan to
>> study
>>>> the
>>>> ratio…"
>>>> "…extract more kinetic and thermal …" ->"…extract the
>> kinetic
>>>> and
>>>> thermal…"
>>>> Line#110: "…pushing our limits to the low end"  Not clear; what
>> is
>>>> that
>>>> low end ? You need to mention.
Comment: In this section-4, it
>>>> would be
>>>> better if you could introduced what is gamma+A event is.
>>>> LIne#119: "For this we form pairs by selecting charged …" ->
>> "For
>>>> this,
>>>> we…'
>>>> In Eq.1, you need to mention what is "n"? Like different order of
>>>> harmonics   Line#130: "within the measurement uncertainties" ->
>>>> "within
>>>> the uncertainties." ( all uncertainties in experiments are
>> measured
>>>> uncertainties)
>>>> Line#131: "High activity events will be explored in future. " Not
>>>> required.
>>>> Line#133: "…    Run-25 data on √sNN = 200 GeV Au+Au
>> collisions,"
>>>> ->
>>>> "…Run-25 data in Au+Au collisions at √sNN = 200
>>>> GeV,"
Line#137:"…       the
>>>> QGP in small and medium systems, " -> "…the QGP in different
>>>> collision
>>>> systems,"
>>>> Line#138: "…    are shown " -> "are discussed."
>>>> Line#140: "…    driven by Npart,  regardless of initial
>>>> geometry;…" ->
>>>> "…driven by Npart regardless of initial geometry." (Finish this
>>>> sentence
>>>> here)
>>>> Line#140-142: "..although in peripheral …
>> .“suppression”
>>>> is observed ."
>>>> -> Start a new sentence here. "The observed suppression in
>>>> peripheral
>>>> events in isobar collisions may be due to the event selection and
>>>> geometry bias in the measurement."
>>>> Line#150: "…found, photonuclear processes with high
>> multiplicity
>>>> .." ->
>>>> "found in the photonuclear processes with high multiplicity …"
>>>> Line#151: "…help us understand …" -> "…help us to
>>>> understand…"
>>>>
>>>> Regards,
>>>> Nihar
>>>>
>>>> On 2022-06-01 00:07, webmaster--- via Star-hp-l wrote:
>>>>> Dear Star-hp-l AT lists.bnl.gov members,
>>>>>
>>>>> Tong Liu (tong.liu AT yale.edu) has submitted a material for a
>>>> review,
>>>>> please
>>>>> have a look:
>>>>> https://drupal.star.bnl.gov/STAR/node/59798
>>>>>
>>>>> ---
>>>>> If you have any problems with the review process, please contact
>>>>> webmaster AT www.star.bnl.gov
>>>>> _______________________________________________
>>>>> 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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>
>
> Links:
> ------
> [1]
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