STAR task force for tuning PYTHIA

[Dmitry Kalinkin <dkalinkin AT bnl.gov>]

Hi all,

I've re-ran pythia 8 with some more tunes against the latest cross
section analyses. See plots at:
https://www.star.bnl.gov/~veprbl/2021/6nx4f59a398bikl7cpq3sfgdiw5d945z-plots/
I only included the HardQCD processes for this.

Best,
Dmitry

Matthew Kelsey via Star-tf-tunepy-l writes:

> Hi all,
>
> I just wanted to remind you this Wed. at 10 am BNL time we will have the 
> discussion with Christian and maybe a few other PYTHIA folks (connection 
> details below).
>
> Since we won’t have our regular meeting before, I propose the following:
>
> - I will present more-or-less the same material as used for the cold QCD 
> PWG meeting, except for jet material. (Base tune + forward rapidity 
> observations)
> - Zilong, if you don’t mind, could you also present your jet 510 GeV 
> studies and add in the 200 GeV plots from Dmitry? (Jet studies)
>
> I think we have a nice discussion in the cold QCD PWG meeting and received 
> some good feedback from our collaborations (summarized below). I think a 
> few of these questions we can discuss with Christian too along.
>
> - Why Monash? Could we try some more recent LHC tunes as a starting point 
> (also see PDF point below)?
> - Having separate mid-rapidity and forward-rapidity tunes can be 
> problematic. Can we try (simultaneously) tuning other parameters, e.g., 
> coupling to ISR which will modify forward observables, or intrinsic kT?
> - Observation of PYTHIA 8 w/ NNPDF2.3 not getting jet cross-section is not 
> too supposing (compared to CTEQ6L1). Other LHC tunes with newer PDF sets 
> might be a better starting point.
>
>  Please let me know if there are other things to discuss or add. I will 
> prepare slides and send tomorrow.
>
> Cheers,
> Matt
>
> ——————————
> Matthew Kelsey
> Postdoctoral Fellow
> Wayne State University
> <he/him/his>
>
> https://urldefense.com/v3/__https://wayne-edu.zoom.us/j/2134166524?pwd=dFZwWTNjTTB4OHZkaHpxLzZDR3hGUT09__;!!P4SdNyxKAPE!XGS04rc8gBU0xWyaVjrDTTqjOsFkCA3pHG4xKKs7fsaNwe8pCILcsuhC-IL-Bz7xg7Q5mRELJ4iOmw$
>  
> Pass: startune
>
> _______________________________________________
> Star-tf-tunepy-l mailing list
> Star-tf-tunepy-l AT lists.bnl.gov
> https://lists.bnl.gov/mailman/listinfo/star-tf-tunepy-l