STAR HardProbes PWG

[Gabe Dale-Gau <gdaleg2 AT uic.edu>]

HP-working group,

I am writing to express intent to submit an abstract towards QM 2023. I have included a draft of a possible abstract. The great majority is the same as the abstract I submitted for HP23, with an additional sentence included in red to highlight the intended extension of the analysis to be shown at QM. The intended title is the same as before: Measurements of Baryon to Meson ratios in jets for Au+Au and p+p collisions at Sqrt{s_NN} = 200 GeV.

Thanks,

Gabe

 

Measurements at RHIC and the LHC show strongly enhanced baryon-to-meson yield ratios at intermediate transverse momenta ($p_{T}$) in high-energy nuclear collisions compared to $p$+$p$ baseline.  This enhancement is attributed to the following QGP effects: strong hydrodynamic flow and parton recombination. Jet probes have been used extensively to gain insights into QGP properties, with substantial modifications to jet yields and internal structures seen across multiple measurements.  Despite apparent medium-induced changes to jet fragmentation patterns, LHC results indicate that in-jet particle production is significantly different from that of the QGP bulk. To explore this behavior at RHIC, we employ particle identification through time of flight and $dE/dx$ information alongside jet-track correlations to measure in-jet particle production for $p_{T} < 5.0$ GeV/c. We present the first in-cone baryon-to-meson yield ratios associated with fully reconstructed jets from 200 GeV Au+Au and $p$+$p$ collisions using the STAR detector at RHIC. We study jet radius, jet p_{T}, and jet constituent p_{T} dependence of in-jet baryon-to-meson ratios to search for possible impacts of jet-medium interactions.