STAR HardProbes PWG

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

Hello Rongrong and Ziyue,

I understand the purpose of combining different runs to get better 
precision.
But I was thinking to combine all available years' data points following 
standard procedure without thinking much of the outcomes.

To Ziyue: could you please share two versions of the plot using 
approach-1 and -2? Mainly nuclear modification and also pp spectra plots 
with these two approaches. Just to see if there is any strong physics 
message can be drawn (based on these two approaches) or not.

Let me know know what do you guys think.

Thank you
Nihar






On 2024-01-26 19:14, Ma, Rongrong wrote:
> Hello Nihar, All
>
> If I can comment on this, using approach-2 seems to defeat the purpose
> of combining different data sets since the errors on the combined
> results are larger than some individual data sets in some bins. It is
> not clear why one wants to combine if the error bars get bigger.
>
> In terms of approach-1, if we believe in Run-9 data, then we should
> just combine it as usual. If there is a good reason not to trust it,
> then we should probably correct it. I agree 3.5sigma is extremely
> rare, but it does not mean it can never happen.
>
> Best
> Rongrong
>
> > On Jan 26, 2024, at 1:35 AM, Nihar Sahoo via Star-hp-l 
> > <star-hp-l AT lists.bnl.gov> wrote:
> >
> > Hello Ziyue,
> >
> > Thank you for this exercise, an important one to combine multiple 
> > runs.
> >
> > After listening yesterday's your presentation and discussion 
> > recording, as i suggested it would be good if you adopt your 
> > approach-2 (slide#5). There is no reason to completely exclude 
> > particular data point of Run9.
> > If the uncertainty gets bigger for that bin after combining all runs, 
> > that is Ok.
> >
> > If you agree, then please circulate your final plot after combining 
> > all pp Runs.
> > And  I understand you want to finalise your results soon.
> > Please let us know what is your plan.
> >
> > Best
> > Nihar
> >
> > On 2024-01-25 08:45, Ziyue Zhang via Star-hp-l wrote:
> > > Hello all,
> > > I'd like to present the update on the dielectron J/psi production 
> > > RpAu
> > > at 200 GeV. Please find the slides here:
> > > https://drupal.star.bnl.gov/STAR/system/files/Dielectron_Jpsi_production_200GeV_combination_QA.pdf
> > > Best,
> > > Ziyue
> > > On Thu, Jan 25, 2024 at 10:41 AM Gabe Dale-Gau via Star-hp-l
> > > <star-hp-l AT lists.bnl.gov> wrote:
> > > > HP-Group,
> > > > Here are my slides for tomorrow morning:
> > > https://drupal.star.bnl.gov/STAR/system/files/HP_Update_Jan25_2024.pdf
> > > > [4]
> > > > Best,
> > > > Gabe
> > > > On Mon, Jan 22, 2024 at 12:42 PM Mooney, Isaac via Star-hp-l
> > > > <star-hp-l AT lists.bnl.gov> wrote:
> > > > > Hi all,
> > > > > We will have our regular HP-PWG meeting this Thursday (January 25)
> > > > > at 10 AM EST.
> > > > > So please let us know if you want to present and discuss your
> > > > > analysis or any other business.
> > > > > Please also send your presentation slides a few hours before the
> > > > > meeting.
> > > > > HP working group weekly meeting info:
> > > https://drupal.star.bnl.gov/STAR/pwg/Hard-Probes/Weekly-HP-PWG-meeting
> > > > > [1]
> > > > > Join ZoomGov Meeting
> > > https://bnl.zoomgov.com/j/1611419615?pwd=VW1hNm43ZDd5d2EvK2R4aEJsQ2ZNZz09
> > > > > [2]
> > > > > Meeting ID: 161 141 9615
> > > > > Passcode: 744968
> > > > > Thanks,
> > > > > Isaac, Nihar, and Yi
> > > > > _______________________________________________
> > > > > Star-hp-l mailing list
> > > > > Star-hp-l AT lists.bnl.gov
> > > https://lists.bnl.gov/mailman/listinfo/star-hp-l
> > > > > [3]
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> > > > [5]
> > > Links:
> > > ------
> > > [1]
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> > > [2]
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> > > [3]
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> > > [4] 
> > > https://urldefense.com/v3/__https://nam04.safelinks.protection.outlook.com/?url=https*3A*2F*2Fdrupal.star.bnl.gov*2FSTAR*2Fsystem*2Ffiles*2FHP_Update_Jan25_2024.pdf&amp;data=05*7C02*7Czzhan70*40groute.uic.edu*7C2b99d1e53028400c698d08dc1d4f228b*7Ce202cd477a564baa99e3e3b71a7c77dd*7C0*7C0*7C638417472959176623*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C0*7C*7C*7C&amp;sdata=U0S7*2BZ4CwSnpDyB0rakRqrmHDu5*2FURoX3mXrOz4pols*3D&amp;reserved=0__;JSUlJSUlJSUlJSUlJSUlJSUlJSUlJSUlJQ!!P4SdNyxKAPE!AqyUiksjHiXYV_VTfSKINGcOTxjUq1Hz5c98JsGSsz5VDRI3cz8rjoRgK7G10Lk6EAsCYLQhmdK1Y86iW85NEyQ$
> > > [5] 
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