STAR task force for tuning PYTHIA

["Fatemi, Renee" <rhfate2 AT g.uky.edu>]

Gotcha - so the top plots are what Zilong was looking at and the change in the gluon is pretty substantial at higher x.

On Wed, Apr 28, 2021 at 5:55 PM Matthew Kelsey <mkelsey AT wayne.edu> wrote:

Hi Renee,

Left-to-right plots show quark and anti-quark. Top-to-bottom will show the different NNPDF sets w.r.t. CTEQ6L.

Cheers,

Matt

——————————
Matthew Kelsey 
Postdoctoral Fellow
Wayne State University
<he/him/his>

On Apr 28, 2021, at 5:53 PM, Fatemi, Renee <rhfate2 AT g.uky.edu> wrote:

Hi Matt,

Thank you so much for this, these plot will be super helpful when looking at your other set of plots.  Just a quick question. Is the bottom left plot supposed to be NNPDF2.3 LO instead of NNPDF3.1LO? If not then what is the difference between bottom left and bottom right.

Thanks,

Renee

On Wed, Apr 28, 2021 at 5:46 PM Matthew Kelsey via Star-tf-tunepy-l <star-tf-tunepy-l AT lists.bnl.gov> wrote:

Thanks Zilong. I have attached it to our Drupal.

I also produced some quick comparisons of the PDFs used with pythia 6/8. You can find some comparison ratios here, and within this vary limited look you can see the differences between the gluon and u/d PDFs.

Cheers,

Matt

——————————
Matthew Kelsey 
Postdoctoral Fellow
Wayne State University
<he/him/his>

On Apr 28, 2021, at 3:52 PM, Chang, Zilong <zchang AT bnl.gov> wrote:

[EXTERNAL]

Hi Matt,

Here is the link to my slides I showed today,

https://drupal.star.bnl.gov/STAR/system/files/Pythia8tune_pp510.pdf

Zilong

On Apr 27, 2021, at 10:31 PM, Matthew Kelsey via Star-tf-tunepy-l <star-tf-tunepy-l AT lists.bnl.gov> wrote:

Hi all,

We will have our weekly meeting to discuss the PYTHIA 8 tuning activities tomorrow at 3 PM BNL time. I have copied the connection details below.

Cheers,
Matt

——————————
Matthew Kelsey
Postdoctoral Fellow
Wayne State University
<he/him/his>

Topic: STAR PYTHIA 8 Tune Task Force
Time: Apr 28, 2021 03:00 PM Eastern Time (US and Canada)

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