Jet-associated deuteron production in pp collisions at √s = 13 TeV
ALICE Collaboration. (2021). Jet-associated deuteron production in pp collisions at √s = 13 TeV. Physics Letters B, 819, Article 136440. https://doi.org/10.1016/j.physletb.2021.136440
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Physics Letters BAuthors
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2021Copyright
© 2021 the Authors
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 √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 (pT>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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