STAR HardProbes PWG

[tc88qy <tc88qy AT rcf.rhic.bnl.gov>]

Hi Barbara,
   I see your point. I agree to include 0-5% centrality to the first 
bin.
If we do 20-40% and 40-80% centrality, the last bin do gain precisions. 
But we probably need to think about the physics information we want to 
look at. In our case, it is the charm and anti-charm correlation that 
affecting by QGP. In most the Au+Au analysis, STAR paper then talk about 
QGP in a centrality of 0-60%, just like the phi spin alignment paper are 
carry out at 20-60%.
  So, I suggest we do the binning of 0-20% , 20-60% and 60-80%.
What do you think?

Qian Yang

On 2023-09-19 23:39, Barbara Trzeciak wrote:
> 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
> > > > _______________________________________________
> > > > Star-hp-l mailing list
> > > > Star-hp-l AT lists.bnl.gov
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