STAR HardProbes PWG

[Yi Yang <yiyang0429 AT gmail.com>]

Hi Nihar.

I don't have any further comments, thanks a lot.

Cheers,

Yi

On Fri, Feb 23, 2024 at 1:20 PM Nihar Sahoo <nihar AT rcf.rhic.bnl.gov> wrote:

Hello Barbara and Yi,

Thank you for your fine tuning comments and suggestions. I have
implemented those.
https://drupal.star.bnl.gov/STAR/presentations/QWG-2024/Recent-heavy-flavor-results-heavy-ion-collisions-STAR

Barbara's following comment:
> s6: I would remove this slide and add the new polarization results,

I know you and Rongrong suggested me to include new Jpsi polarization
results, but I find my self a bit uncomfortable to include that result
and also time constraint to explain the result. So I would prefer  not
to include. Nasim is presenting pp published results.


Thank you
Nihar

On 2024-02-23 08:39, Yi Yang wrote:
> Hi Nihar,
>
> Thanks a lot for the updated version. I agree with Barbara's
> additional comments.
>
> Cheers,
> Yi
>
> On Thu, Feb 22, 2024 at 6:33 PM Nihar Sahoo <nihar AT rcf.rhic.bnl.gov>
> wrote:
>
>> Hello Yi,
>>
>> Thank you for your comments. I have implemented all your comments
>> and
>> modified my slides a bit in version-2.
>>
>>
> https://drupal.star.bnl.gov/STAR/presentations/QWG-2024/Recent-heavy-flavor-results-heavy-ion-collisions-STAR
>>
>> Please have a look.
>>
>> Thank you
>> Nihar
>>
>> On 2024-02-22 08:50, Yi Yang wrote:
>>> Hi Nihar,
>>>
>>> Thanks a lot for the nice slides.
>>> I have some minor suggestions on v1 for your consideration.
>>> - page 2: baryon density QCD medium --> baryon density in QCD
>> medium
>>> I would indicate ccbar is J/psi and bbbar is
>> Upsilon
>>> (probably everyone knows that)
>>> - page 6: The reference should be "Phys. Lett. B797 (2019)
>> 134917"
>>> (the one you put is for RpAu)
>>> - page 8: Probably you can also consider to show Ziyue/Te-Chuan's
>> new
>>> results here since it still slightly improves the statistics in
>> high
>>> pT.
>>> - page 10: I would show the Psi(2S) signal (mass plot) instead of
>> the
>>> thermometer on the right, but just a suggestion.
>>> - page 15 and 16: It would be good to indicate 200 GeV collision
>>> energy
>>>
>>> I understand you only have 15 mins, but I would think adding
>> Upsilon
>>> in isobar and J/psi at very low pT would be good in the talk.
>>>
>>> Cheers,
>>> Yi
>>>
>>> On Thu, Feb 22, 2024 at 1:12 AM Nihar Sahoo via Star-hp-l
>>> <star-hp-l AT lists.bnl.gov> wrote:
>>>
>>>> Hello Barbara and Rongrong,
>>>>
>>>> Thank you two for your nice comments.
>>>> Based on your comments and suggestion, I modified and
>> restructured
>>>> my
>>>> presentation.
>>>> This is a 15min presentation; a few topics I do not add due to
>> time
>>>> constraint.
>>>>
>>>>
>>>
>>
> https://drupal.star.bnl.gov/STAR/presentations/QWG-2024/Recent-heavy-flavor-results-heavy-ion-collisions-STAR
>>>>
>>>> Please have a look.
>>>>
>>>> Thank you
>>>> Nihar
>>>>
>>>> On 2024-02-21 03:51, Barbara Trzeciak wrote:
>>>>> Hi Nihar,
>>>>>
>>>>> Please find below a few comments from my side.
>>>>>
>>>>> - Add references to the published results
>>>>> - s2: Following up on Rongrong's comment, I would even remove
>> the
>>>>> thermometer picture from there. We know it's a very simplified
>>>>> picture, and I don't think it's needed for this expert audience.
>>>>> By the QGP thermalization I guess you mean the QGP temperature.
>>>> But
>>>>> again, one needs to be careful here, it's not only the static
>>>> Debye
>>>>> screening but the dynamical processes play a role.
>>>>> And instead of the heavy flavor motivation that you have now,
>> you
>>>> can
>>>>> say here that there are different process that influence
>>>> quarkonium
>>>>> production: dissociation (both static and dynamical),
>> regeneration
>>>> +
>>>>> cold nuclear matter effects
>>>>> - s9: remove "Smaller charm production rate at RHIC"
>>>>> - s10: Title: I guess you want to emphasise here isobar
>> collision
>>>>> results - I would change the title. The Au+Au results you either
>>>> show
>>>>> on the previous slides or are already old.
>>>>> And I would add here (or add a slide before this one) motivating
>>>>> studies in smaller isobar collisions, e.g.: study dependence of
>>>> hot
>>>>> nuclear medium effects on medium size and energy density.
>>>>> And I would use here a simpler plot that we have, without the
>> LHC
>>>>> data.
>>>>> - s10: "or/and charm flow in QGP at RHIC" - you mean no or small
>>>> flow
>>>>> ?
>>>>> - s11: I would suggest adding the J/psi polarization in isobar
>>>>> collisions. If you don't have time, I think it might be more
>>>>> interesting in this workshop than the rho00 result.
>>>>> - s12: suppression in heavy-ion collisions- > sequential
>>>> suppression
>>>>> in heavy-ion collisions at RHIC
>>>>> - s12: remove "Confirms QGP thermalization and Debye screening
>> in
>>>>> QGP", I suggest "QGP thermal properties"
>>>>> - I'm not sure what you want to say with the second bullet, it's
>>>> quite
>>>>> generic statement
>>>>>
>>>>> Cheers,
>>>>> Barbara
>>>>>
>>>>> On Tue, Feb 20, 2024 at 10:19 PM Ma, Rongrong via Star-hp-l
>>>>> <star-hp-l AT lists.bnl.gov> wrote:
>>>>>
>>>>>> Hello Nihar
>>>>>>
>>>>>> Thanks for updating your slides. I have few more comments for
>>>> your
>>>>>> consideration:
>>>>>>
>>>>>> Slide 1: change the title to "Recent quarkonium results in ..."
>>>>>>
>>>>>> Slide 2:
>>>>>> - here you show the thermometer picture and mention " Debye
>>>>>> screening". However, you do not really explain what they are.
>> The
>>>>>> second bullet reads more like an open HF introduction.
>>>>>> - Given the realization of imaginary part of the potential, I
>>>> think
>>>>>> it is better to say dissociation in general, which includes
>> both
>>>>>> static ("Debye screening") and dynamic processes. At least, you
>>>>>> should mention dynamical dissociation along with Debye
>> screening.
>>>>>> - Throughout the presentation, you mention a few times about
>> "QGP
>>>>>> thermalization". Could you elaborate how one connects
>> quarkonium
>>>>>> suppression with QGP thermalization?
>>>>>> - For Nasim's talk, I think it is better to be titled
>> "quarkonia
>>>> in
>>>>>> p+p"
>>>>>> - I think QGP usually stands for Quark-Gluon Plasma
>>>>>>
>>>>>> Slide 3:
>>>>>> - since you do not show any open HF results, I do not think you
>>>> need
>>>>>> the HFT picture
>>>>>> - Forward Silicon Track -> FST
>>>>>> - Forward EMCal and HCal -> FCS
>>>>>>
>>>>>> Slide 8
>>>>>> - This slide reads like an introduction slide for quarkonia,
>>>> which
>>>>>> should be moved to slide 2?
>>>>>> - charm quark dissociation -> quarkonia dissociation
>>>>>>
>>>>>> Slide 9: I feel this slide should go together with slide 4
>> which
>>>>>> also discusses about energy dependence
>>>>>>
>>>>>> Slide 10: it is not clear what you want to say about the left
>>>>>> figure. The energy dependence has been discussed earlier. If
>> you
>>>>>> want to focus on the system size dependence, I have a version
>> of
>>>> the
>>>>>> figure with only 200 GeV collision systems:
>>>>>>
>>>>
>> https://drupal.star.bnl.gov/STAR/system/files/Jpsi_Isobar_AuAu.pdf.
>>>>>> Also it is probably better to split this slide into two.
>>>>>>
>>>>>> Slide 11: our vector meson spin alignment paper concluded that
>>>> the
>>>>>> QGP's global angular momentum, as observed in Lambda
>>>> polarization,
>>>>>> actually contributes very little to the observed vector meson
>>>> spin
>>>>>> alignment. One possible origin is the strong force field, which
>>>>>> applies to phi meson and should also apply to Jpsi. This is a
>>>> main
>>>>>> motivation to measure Jpsi spin alignment, I think.
>>>>>>
>>>>>> Best
>>>>>> Rongrong
>>>>>>
>>>>>> On Feb 17, 2024, at 1:50 PM, Nihar Sahoo
>>>> <nihar AT rcf.rhic.bnl.gov>
>>>>>> wrote:
>>>>>>
>>>>>> Hello Rongrong,
>>>>>>
>>>>>> Yes, you are correct. I was diverted a bit from the theme of
>> this
>>>>>> workshop.
>>>>>> Ok, I corrected those with a discussion of J/psi RAA and v2
>> from
>>>>>> Isobar.
>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
> https://drupal.star.bnl.gov/STAR/presentations/QWG-2024/Recent-heavy-flavor-results-heavy-ion-collisions-STAR
>>>>>>
>>>>>> Please have a look.
>>>>>>
>>>>>> Thank you
>>>>>> Nihar
>>>>>>
>>>>>> On 2024-02-16 22:14, Ma, Rongrong wrote:
>>>>>> Hello Nihar
>>>>>> The invitation is intended for presenting recent quarkonium
>>>> results
>>>>>> in
>>>>>> heavy-ion collisions at STAR since it is a quarkonium workshop.
>>>> So,
>>>>>> I
>>>>>> think it is probably not so relevant to present open HF results
>>>>>> (slides 9-11). Instead, you can consider talking about Jpsi and
>>>>>> Upsilon Raa, Jpsi v2, Jpsi polarization in Isobar, for example.
>>>>>> Thanks.
>>>>>> Best
>>>>>> Rongrong
>>>>>> On Feb 14, 2024, at 5:33 AM, Nihar Sahoo via Star-hp-l
>>>>>> <Star-hp-l AT lists.bnl.gov> wrote:
>>>>>> Hello HP-pwg,
>>>>>> This is an invited talk from startalk to present at QWG2024 at
>>>>>> Mohali, India, on "Recent heavy flavor results in heavy ion
>>>>>> collisions at STAR".
>>>>>> It would be great to have comment/feedback from hp-pwg. Please
>>>> have
>>>>>> a look.
>>>>>> Thank you
>>>>>> Nihar
>>>>>> On 2024-02-14 15:57, webmaster--- via Star-talks-l wrote:
>>>>>> Dear star-talks-l AT lists.bnl.gov members,
>>>>>> Nihar Sahoo (nihar AT rcf.rhic.bnl.gov) has submitted a material
>> for
>>>> a
>>>>>> review,
>>>>>> please have a look:
>>>>>> https://drupal.star.bnl.gov/STAR/node/66782
>>>>>> Deadline: 2024-02-26
>>>>>> ---
>>>>>> If you have any problems with the review process, please
>> contact
>>>>>> webmaster AT www.star.bnl.gov
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