Adam, Jaroslav ; Galatyuk, Tetyana ; Seck, Florian
Hrsg.: STAR Collaboration (2020)
First Measurement of Λc Baryon Production in Au+Au Collisions at √sNN = 200 GeV.
In: Physical Review Letters, 124 (17)
doi: 10.1103/PhysRevLett.124.172301
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We report on the first measurement of the charmed baryon Λ±c 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 (Λ+c+Λ−c)/(D0+¯D0)] 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.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2020 |
| Autor(en): | Adam, Jaroslav ; Galatyuk, Tetyana ; Seck, Florian |
| Art des Eintrags: | Bibliographie |
| Titel: | First Measurement of Λc Baryon Production in Au+Au Collisions at √sNN = 200 GeV |
| Sprache: | Englisch |
| Publikationsjahr: | 1 Mai 2020 |
| Verlag: | APS Physics |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physical Review Letters |
| Jahrgang/Volume einer Zeitschrift: | 124 |
| (Heft-)Nummer: | 17 |
| DOI: | 10.1103/PhysRevLett.124.172301 |
| Kurzbeschreibung (Abstract): | We report on the first measurement of the charmed baryon Λ±c 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 (Λ+c+Λ−c)/(D0+¯D0)] 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. |
| Zusätzliche Informationen: | Art.No.: 172301 |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Kernphysik 05 Fachbereich Physik > Institut für Kernphysik > Experimentelle Kernphysik 05 Fachbereich Physik > Institut für Kernphysik > Experimentelle Kernphysik > Untersuchung von Quark-Materie mit virtuellen Photonen |
| Hinterlegungsdatum: | 09 Nov 2023 10:20 |
| Letzte Änderung: | 13 Dez 2023 10:03 |
| PPN: | 51402108X |
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