$J/\psi$ production in pp collisions at $\sqrt{{\rm s}}$=200GeV in the STAR experiment
Mauro R. Cosentino (for the Star Collaboration)
TL;DR
This paper reports the measurement of $J/\psi$ production in proton-proton collisions at 200 GeV by the STAR experiment, providing baseline data for understanding quarkonium behavior in nuclear media.
Contribution
It presents the first detailed $J/\psi$ cross section and $p_T$ distribution measurements in p+p collisions at this energy within the STAR collaboration.
Findings
Total cross section consistent with pQCD CEM predictions
$p_T$ distribution aligns with previous measurements
Establishes baseline for future quarkonium medium modification studies
Abstract
In this work we present the measurement in p+p collisions within the STAR collaboration Quarkonium program. This measurements aim to be the baseline measurement of a more comprehensive systematic study of quarkonium states production in order to understand their in medium modification. Here we report the total cross section and distribution, and find them to be consistent with pQCD CEM predictions as well as to previous measurements at the same center-of-mass energy.
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