STAR HardProbes PWG

[Nihar Sahoo <nihar AT rcf.rhic.bnl.gov>]

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
> > > > _______________________________________________
> > > > Star-talks-l mailing list
> > > > Star-talks-l AT lists.bnl.gov
> > > > https://lists.bnl.gov/mailman/listinfo/star-talks-l
> > > > _______________________________________________
> > > > Star-hp-l mailing list
> > > > Star-hp-l AT lists.bnl.gov
> > > > https://lists.bnl.gov/mailman/listinfo/star-hp-l
> > >
> > > _______________________________________________
> > > Star-hp-l mailing list
> > > Star-hp-l AT lists.bnl.gov
> > > https://lists.bnl.gov/mailman/listinfo/star-hp-l
> > _______________________________________________
> > Star-hp-l mailing list
> > Star-hp-l AT lists.bnl.gov
> > https://lists.bnl.gov/mailman/listinfo/star-hp-l