STAR HardProbes PWG

[Barbara Trzeciak <barbara.trzeciak AT gmail.com>]

Hi Qian,

thanks for point to the slides with additional checks.

Regarding 0-5% centrality bin:

As ShinIch also commented, sometimes the most central bin is remove due to poor event plane resolution. However, in this case I don't see the resolution being particularly bad, it's not so much worse than for the mid-central case. If we have enough confidence to have this point in the centrality differential plot, I don't see a reason why not to include it when you integrate to wider centrality ranges.

Regarding the other binning:

The reason for having 20-40% and 40-80% is that the precision of the mid-central point is almost the same while the peripheral bin gains in precision compare to the 50-80% centrality range.

Cheers,

Barbara 

On Tue, 19 Sept 2023, 17:21 tc88qy, <tc88qy AT rcf.rhic.bnl.gov> wrote:

Hi Barbara,

I replied to the HP list for the comments I got from last HP meeting.
Please find the details in this link:
https://drupal.star.bnl.gov/STAR/system/files/jpsiSpinAlignment_20230917.pdf
In terms of the binning, I am not sure the reason of 20-40% bin.

Qian Yang

On 2023-09-19 22:15, Barbara Trzeciak wrote:
> Hi Qian,
>
> I see that you consider three centrality classes on plots on slides
> 14-16 - same as you presented last week.
> As we discussed in more detail at the previous HP meeting, it looks a
> bit weird (and I don't know what's the motivation in this case) that
> you exclude 0-5% centrality bin.
> I suggest having the first bin as 0-20% centrality, then 20-40% and
> 40-80%.
> Also, could you please prepare a comparison to the results that use
> the first order event plane.
>
> Cheers,
> Barbara
>
> On Mon, Sep 18, 2023 at 10:36 AM tc88qy via Star-hp-l
> <star-hp-l AT lists.bnl.gov> wrote:
>
>> Hello all,
>> Please find my preliminary plots request in link below:
>>
> https://drupal.star.bnl.gov/STAR/system/files/Preliminary_figures_request_1.pdf
>>
>> Qian Yang
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