Details

Autor(en) / Beteiligte

• Adam, J

Titel

First Measurement of Λc Baryon Production in Au+Au Collisions at sNN=200  GeV

Ist Teil von

• Physical review letters, 2020-05, Vol.124 (17), p.1

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2020

Link zum Volltext

Quelle

PROLA

Beschreibungen/Notizen

• We report on the first measurement of the charmed baryon Λc± production at midrapidity (|y|<1) in Au+Au collisions at sNN=200  GeV collected by the STAR experiment at the Relativistic Heavy Ion Collider. The Λc/D0 [denoting (Λc++Λc−)/(D0+D¯0)] yield ratio is measured to be 1.08±0.16  (stat)±0.26  (sys) in the 0%–20% most central Au+Au collisions for the transverse momentum (pT) range 3<pT<6  GeV/c. This is significantly larger than the pythia model calculations for p+p collisions. The measured Λc/D0 ratio, as a function of pT and collision centrality, is comparable to the baryon-to-meson ratios for light and strange hadrons in Au+Au collisions. Model calculations including coalescence hadronization for charmed baryon and meson formation reproduce the features of our measured Λc/D0 ratio.