Jet-associated deuteron production in pp collisions at √<i>s</i>=13 TeV


Acharya S., Adamová D., Adler A., Adolfsson J., Aglieri Rinella G., Agnello M., ...More

PHYSICS LETTERS B, vol.819, 2021 (SCI-Expanded, Scopus)

  • Publication Type: Article / Article
  • Volume: 819
  • Publication Date: 2021
  • Doi Number: 10.1016/j.physletb.2021.136440
  • Journal Name: PHYSICS LETTERS B
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, INSPEC, zbMATH, Directory of Open Access Journals
  • Yıldız Technical University Affiliated: No

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 root 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(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. (C) 2021 The Author. Published by Elsevier B.V.