STAR HardProbes PWG

["Mooney, Isaac" <isaac.mooney AT yale.edu>]

Hi Brennan,

I’m sorry for my delay — I didn’t realize the deadline was today. For the future, if you upload the abstract to the Drupal interface it gives us an email letting us know the deadline, so we know if we need to bump it up our priority lists. I have a few small comments below. And could you upload the abstract to Drupal and let me know once you do, so I can push it to STAR-talks so Barbara can hopefully send her comments today? Yi and Nihar can also hopefully add their comments once they wake up in the evening in Eastern Time.

Thanks,

Isaac

"Measurement of J/\psi multiplicity-dependent production in p+p collisions at \sqrt{s} = 510 GeV at STAR"

Should this be "higher-order gluon radiation"? If not, what does "higher" refer to with respect to the production mechanism?

"divergence"

On Jul 5, 2023, at 12:29 PM, Brennan Schaefer via Star-hp-l <star-hp-l AT lists.bnl.gov> wrote:

Dear HP+Quarkonia conveners and members,

Below is a proposed abstract for the Fall DNP meeting.  Of note, this abstract was essentially approved for an earlier conference.

Measurement of J/Psi multiplicity dependent production in p+p = sqrt{s} = 510 GeV

The investigation of quarkonium production allows for the study of the properties of strongly interacting matter, such as interactions with the quark-gluon plasma and nucleonic gluon content. While such probes are essential, a detailed description of the quarkonium production mechanism is not yet completely understood. Proposed explanatory mechanisms, including multi-parton interactions, string screening, and higher gluon radiation are discussed, as well as the guidance this measurement and related probes provide to model calculations. The diverge of models at high normalized multiplicity emphasizes the potential for improvement arising from extending the measurement range.

Herein we present measurements of J/Psi production in the dielectron channel in 510 GeV p+p collisions recorded by the STAR detector in 2017. Observables include transverse momentum and rapidity spectra, however the main aim of this study is measuring the dependence of self-normalised J/Psi yields with respect to charged particle multiplicity. The presented analysis utilizes the largest dielectron sample of quarkonia the STAR experiment has obtained from p+p collisions, therefore both increasing precision and extending the reach into higher multiplicity.

all the best,

b

--

Brennan Schaefer

Postdoctoral Research Associate

Physics Department

Lehigh University

Bethlehem, PA 18015, USA

402 Lewis Laboratory

tel: 610.758.5328

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