STAR HardProbes PWG

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

Hello Barbara,

What I mean here that to have better model of the CNM effects, Theorist 
need a comparison between pAu and Au+Au collisions.
Please see summary of our STAR paper 
https://arxiv.org/pdf/2110.09666.pdf
"... to quantify the CNM effects experienced by the J/ψ meson in p+Au 
collisions."

Best
Nihar


On 2024-02-23 13:44, Barbara Trzeciak wrote:
> Hi Nihar,
>
> thanks, I have one more question:
> - s7: "p+Au vs. Au+Au: Comparison helps to quantify the CNM effect" -
> I don't think I understand how we quantify CNM effects by the
> comparison ?
>
> Cheers,
> Barbara
>
> On Fri, Feb 23, 2024 at 8:36 AM Yi Yang <yiyang0429 AT gmail.com>
> wrote:
>
> > 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
> > > > > > > > > _______________________________________________
> > > > > > > > > Star-talks-l mailing list
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