STAR HardProbes PWG

[Yi Yang <yiyang0429 AT gmail.com>]

Hi Qian,

Thanks a lot. I don't have any further comments on your nice slides.

Cheers,

Yi

On Fri, Dec 8, 2023 at 9:35 AM tc88qy <tc88qy AT rcf.rhic.bnl.gov> wrote:

Hi Yi,
   Thanks for your nice suggestions. I have implemented all your comments
in slides.
   For the last one, I made a modification on the pT dependence part at
the summary page.
   Please find the new slides in the same webpage.

Qian Yang

On 2023-12-08 07:17, Yi Yang wrote:
> Hi Qian,
>
> Thanks a lot for the nice slides. I have some minor suggestions for
> your consideration.
>  - p4: observable --> observables
>  - p9: You didn't mention which dataset you are using.
>  - p14: The title is overlapped with the STAR Logo
>  - p17: HIC --> heavy-ion collisions
>  - p18: you said "no significant pT dependence", but in p10 you
> mentioned "Hint of a non-trivial pT dependence at
> low-pT range in the HX frame". I think we did this in QM, but now I
> think it is a bit contradictory. I would suggest making them
> consistent.
>
> Cheers,
> Yi
>
> On Wed, Dec 6, 2023 at 12:55 PM tc88qy <tc88qy AT rcf.rhic.bnl.gov>
> wrote:
>
>> Hello Nihar，
>> Thanks for your comments, please find my rely inline. Also the new
>> version has been uploaded.
>>
>> Qian Yang
>>
>> On 2023-12-05 11:34, Nihar Sahoo wrote:
>>> Hello Qian,
>>>
>>> Please find my comments on your nice presentation slides.
>>>
>>> SLide-4:
>>> Not sure, what is the purpose of left figure?
>>> Left side theory plot is for J/psi polarization in jet where as
>> right
>>> side is for inclusive J/psi polarization.
>>> There are different. The comparison may not be correct. Is not it?
>>
>> It is not a comparison, but two examples that proved J/psi
>> polarization
>> is a key observable in p+p to understand the production mechanism.
>>>
>>> Besides, Left figure for x-axis J/psi FF (zh) where as the right
>> data
>>> plot x-axis is Jpsi pT.
>>> I understand the purpose of left side figure. But I think this may
>> be
>>> an incorrect comparison to motive the physics.
>>>
>>> Slide5:
>>> More fruitful process related to J/ψ in heavy-ion collisions: ->
>>> Leading J/psi production mechanisms in heavy-ion collisions:
>>
>> There is also dissociation of J/psi in QGP, which is not a
>> production
>> mechanism and absent in p+p. so I think leading J/psi production
>> mechanisms is not that precise.
>>
>>> Coalescence -> is this "co-mover"?
>>
>> Co-mover normally used to describe one of the cold nuclear effect of
>>
>> J/psi suppression.
>> For a pair of charm and qnti-charm bonds to a J/psi at the phase
>> boundary, we normally used the word coalescence/regeneration.
>>
>>>
>>> SLide6:
>>> "J/ψ polarization at small pT,…" -> This discussion, in this
>> slide,
>>> seems out of context. I would suggest remove this or make it clear
>> how
>>> this is related with Modification of J/ψ feed-down. Or Am I
>>> misunderstood?
>>
>> I made some modification on this slides. The plots gives an example
>> of
>> feed-down contribution modification due to the QGP. While this text
>> gives prediction of such modification will introduce a J/psi
>> polarization.
>>
>>>
>>> Slide13:
>>> "Particle by Particle polarization of J/ψ in QGP" -> Not clear
>> what is
>>> particle-by-particle?
>> Yes, it is misleading. I remove this part.
>>>
>>> Best
>>> Nihar
>>>
>>>
>>> On 2023-12-04 21:03, tc88qy via Star-hp-l wrote:
>>>> Hi Yi,
>>>>
>>>> I have uploaded the file again, Please check.
>>>>
>>>> Qian Yang
>>>>
>>>> On 2023-12-04 16:07, Yi Yang via Star-hp-l wrote:
>>>>> Hi Qian,
>>>>>
>>>>> I removed the 66133 and we will comment on 66134
>>>>> (https://drupal.star.bnl.gov/STAR/node/66134).
>>>>> But it seems the file in 66134 is also removed, could you please
>>>>> upload again? Thanks a lot.
>>>>>
>>>>> Cheers,
>>>>> Yi
>>>>>
>>>>> On Fri, Dec 1, 2023 at 10:27 PM webmaster--- via Star-hp-l
>>>>> <star-hp-l AT lists.bnl.gov> wrote:
>>>>>
>>>>>> Dear Star-hp-l AT lists.bnl.gov members,
>>>>>>
>>>>>> Qian Yang (tc88qy AT rcf.rhic.bnl.gov) has submitted a material
>> for a
>>>>>> review,
>>>>>> please have a look:
>>>>>> https://drupal.star.bnl.gov/STAR/node/66134
>>>>>>
>>>>>> Deadline: 2023-12-15
>>>>>> ---
>>>>>> If you have any problems with the review process, please
>> contact
>>>>>> webmaster AT www.star.bnl.gov
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