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arXiv · 2011.05898

Jet-associated deuteron production in pp collisions at $\sqrt{s}=13$ TeV

ALICE Collaboration
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Abstract

Deuteron production in high-energy collisions is sensitive to the space-time evolution of the collision system, and is typically described by a coalescence mechanism. For the first time, we present results on jet-associated deuteron production in \pp\ collisions at $\sqrt{s}=13$ TeV, providing an opportunity to test the established picture for deuteron production in events with a hard scattering. Using a trigger particle with high transverse-momentum ($p_{\rm T}>5$ GeV/$c$) as a proxy for the presence of a jet at midrapidity, we observe a measurable population of deuterons being produced around the jet proxy. The associated deuteron yield measured in a narrow angular range around the trigger particle differs by 2.4-4.8 standard deviations from the uncorrelated background. The data are described by PYTHIA model calculations featuring baryon coalescence.

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ALICE Collaboration. 2022-01-17. Jet-associated deuteron production in pp collisions at $\sqrt{s}=13$ TeV. https://doi.org/10.1016/j.physletb.2021.136440

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