STAR HardProbes PWG

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

Hello Youqi,

Please find my additional comments on your slides.
On this version:
https://drupal.star.bnl.gov/STAR/system/files/dis_032823_v3_print.pdf

Slide4:
You don't describe what is (z_cut,2 , beta_2). Please mention what is 
that.
if you don't use, mention it.

SLide:6
"Note: Hadronization effects smear the distribution but don’t affect the 
correlations (see backup)"

Please either put some plots here to show what you claim or remove it 
and in case someone asks you go to your backup slide.
In your talk while presenting, no one will go to see your backup.

SLide14:
Please use the right side 2D figure that Monika is using in his talk 
(with extended Y-axis and all labels inside).
I am also using the same one like Monika in STAR highlight talk. So 
let's make in consistent, please.

"Early soft wide radiation…" -> "Early soft wide-angle radiation…"

 "consistent with angular ordered parton shower picture"
Do you mean all subsequent emissions from hard parton in vacuum as a 
function of formation time?


Thank you
Nihar



On 2023-03-24 15:04, Barbara Trzeciak wrote:
> Hi Youqi, Helen,
> thanks for the explanation.
> The slides look good to me. I sign off with the last minor comment.
> - s14: there is a blue line below the figure's text on the right side.
> And use the same 2D plot (with STAR the Preliminary label) on slide
> 15.
>
> Cheers,
> Barbara
>
> On Thu, Mar 23, 2023 at 11:58 PM Helen Caines
> <helen.caines AT yale.edu> wrote:
>
> > Hi Yi, Barbara,
> >
> > Youqi can correct me if I am wrong, but the HERWIG simulation is
> > run at 200 GeV is it just that the tune was done to LHC data.
> >
> > So the physics evolution with sqrt(s) should be there and the
> > comparison valid. Also, since this is a substructure variable if
> > they have the quark/gluon fraction changing appropriately with
> > sqrt(s) the agreement should be good if they are modeling this well
> > at LHC energies. Once the hard scatter has occurred, and assuming
> > the UE isn’t contaminating the results horribly, how the parton
> > splits and then hadronizes should be independent of the original
> > sqrt(s) of the collision for a fixed jet pT and parton species.
> >
> > Helen
> >
> > ***********************
> > Yale University
> > Physics Dept. - Wright Lab.
> > PO Box 208120
> > New Haven, CT 06520
> > 203-432-5831
> > ***********************
> > she/her/hers
> > "Life is not about waiting for the storms to pass.
> > It's about learning how to dance in the rain." - Vivian Greene
> >
> > On Mar 23, 2023, at 4:16 PM, Youqi Song via Star-hp-l
> > <star-hp-l AT lists.bnl.gov> wrote:
> >
> > Hi all,
> >
> > Thanks for the additional feedback! I have implemented all the
> > suggestions and  uploaded my slides here:
> https://drupal.star.bnl.gov/STAR/system/files/dis_032823_v3_print.pdf.
> > Regarding the HERWIG comparisons, I think we are only making a weak
> > statement by claiming that "they are roughly consistent with the
> > trend of data", so we aren't drawing too much physics out of the
> > comparisons. But I will discuss that more with Helen and Raghav on
> > that and update you about it.
> >
> > Please let me know if you have any additional comments and
> > questions!
> >
> > Best,
> > Youqi
> >
> > On Thu, Mar 23, 2023 at 5:44 AM Yi Yang <yiyang AT ncku.edu.tw>
> > wrote:
> >
> > Hi Youqi,
> >
> > Thanks a lot for the updated version and reply. I don't have any
> > further comments on your nice slides.
> > Just want to follow up the HERWIG7, I understand it has different
> > hadronization and it is (probably) okay to compare it with. But can
> > you really draw a conclusion from this comparison? I mean, can you
> > tell the difference is due to different collision energy or
> > hadronization process? If not, I am not sure how helpful this
> > comparison can be. Just my two cents.
> >
> > Cheers,
> > Yi
> >
> > +++++++++++++++++++++++++++++++++++++++++++++++++++
> > Yi Yang, Professor
> > Department of Physics /
> > Director of Science Education Center
> > 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 Wed, Mar 22, 2023 at 9:59 PM Youqi Song <youqi.song AT yale.edu>
> > wrote:
> >
> > Hi Barbara, Nihar and Yi,
> >
> > Thanks for the feedback! I have updated my slides here:
> > https://drupal.star.bnl.gov/STAR/system/files/dis_032823_v3.pdf
> >
> > Regarding Barbara's comments:
> >
> > Just a comment on s16. It's hard to quickly judge by eye which
> > distribution is more steep so it might not be obvious to people. But
> > you don't need the right plot to make this point. The first split
> > should be basically the sum of the contributions that you show on
> > your plot. So naturally it should be less steep than the blue, if
> > green and yellow are flatter. With the z_g in R_g bins we show that
> > we saw the np contributions to the first split and have a consistent
> > picture - as you write in your backup. Which I think is a nice
> > physics message.
> > I see, that's a good point. I switched the zg vs Rg plot into the
> > main section and zg vs # splitting to backup.
> >
> > Regarding Nihar's comments:
> >
> > I have fixed the wording and updated my figures here:
> https://drupal.star.bnl.gov/STAR/blog/youqi/Multidimensional-jet-substructure-multifold-preliminary-figures.
> > Regarding Yi's comments:
> >
> > - p2: your right-handed cartoon plot covers the text a bit.
> > - p3: the resolution at the left-bottom area (z_g, z_cut, and beta)
> > is not good? And similar for dM/M and M on p4.
> > I fixed these in the new version.
> > - p6: What does "~" mean here? I saw 3 places.
> > I use "~" to indicate something like "roughly implies/looks like".
> > We wanted to be careful here because hadronization effects can
> > affect our measurements. I added a note about that on this slide.
> >
> > - p12: Could you please remind me of the motivation for comparing
> > HERWIG with LHC tune? Do we expect the tune works for RHIC?
> > We don't have a HERWIG tune at RHIC energy, and this LHC tune that
> > we used is the default tune in HERWIG7. I think it's still useful to
> > compare since it does hadronization differently from PYTHIA.
> >
> > - p14: the "boxes (yellow, green, and black)" cover the information
> > on the plot, could you please try a thinner line for them?
> > I have my slides in animation, so when the left side 2D plot first
> > shows up, those boxes are not there. I will keep them for my
> > presentation, but perhaps when I upload the slides to the indico
> > page I can remove those boxes.
> >
> > Best,
> > Youqi
> >
> > On Wed, Mar 22, 2023 at 8:36 AM Yi Yang via Star-hp-l
> > <star-hp-l AT lists.bnl.gov> wrote:
> >
> > Hi Youqi,
> >
> > Thanks a lot for the nice slides. I only have some minor comments
> > for your consideration.
> > - p2: your right-handed cartoon plot covers the text a bit.
> > - p3: the resolution at the left-bottom area (z_g, z_cut, and beta)
> > is not good? And similar for dM/M and M on p4.
> > - p6: What does "~" mean here? I saw 3 places.
> > - p12: Could you please remind me of the motivation for comparing
> > HERWIG with LHC tune? Do we expect the tune works for RHIC?
> > - p14: the "boxes (yellow, green, and black)" cover the information
> > on the plot, could you please try a thinner line for them?
> > - p15: I am not sure if it is good to say "See Monika's talk at
> > HP", probably is okay...
> >
> > Cheers,
> > Yi
> >
> > +++++++++++++++++++++++++++++++++++++++++++++++++++
> > Yi Yang, Professor
> > Department of Physics /
> > Director of Science Education Center
> > 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 [2]
> > +++++++++++++++++++++++++++++++++++++++++++++++++++
> >
> > On Tue, Mar 14, 2023 at 10:14 AM webmaster--- via Star-hp-l
> > <star-hp-l AT lists.bnl.gov> wrote:
> > Dear Star-hp-l AT lists.bnl.gov members,
> >
> > Youqi Song (youqi.song AT yale.edu) has submitted a material for a
> > review,
> > please have a look:
> > https://drupal.star.bnl.gov/STAR/node/62961
> >
> > Deadline: 2023-03-27
> > ---
> > If you have any problems with the review process, please contact
> > webmaster AT www.star.bnl.gov
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