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

STAR Collaboration

doi:10.1103/PhysRevLett.124.172301

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

STAR Collaboration

Brookhaven National Laboratory
AGH University of Krakow
Ohio State University
University of Kentucky
Kent State University
Joint Institute for Nuclear Research
Panjab University
Variable Energy Cyclotron Centre
Russian Research Centre Kurchatov Institute
Moscow Engineering Physics Institute
Texas A&M University
Central China Normal University
Indian Institute of Science Education and Research, Berhampur
University of California at Riverside
Stony Brook University
University of Houston
University of Jammu
Czech Technical University in Prague
Czech Academy of Sciences
Shandong University
Rice University
Yale University
University of California at Davis
University of California at Los Angeles
National Cheng Kung University
Fudan University
University of Science and Technology of China
Tsinghua University
Creighton University
University of California at Berkeley
Eötvös Loránd University
Abilene Christian University
Heidelberg University
Institute for High Energy Physics
Lawrence Berkeley National Laboratory
Purdue University
Wayne State University
University of Tsukuba
University of Illinois at Chicago
Lehigh University
Southern Connecticut State University
Technische Universität Darmstadt
Valparaiso University
Indian Institute of Science Education and Research, Tirupati
American University in Cairo
Chinese Academy of Sciences
Pennsylvania State University
Indiana University Bloomington
Warsaw University of Technology
Goethe University Frankfurt
Argonne National Laboratory
Temple University
National Institute of Science Education and Research
University of Texas at Austin
Rutgers - The State University of New Jersey, New Brunswick
Max Planck Institute for Physics (Werner Heisenberg Institute)
Indian Institute of Technology Patna
Universidade de São Paulo
Huzhou University
Michigan State University
United States Naval Academy

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79 Scopus citations

Abstract

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.

Original language	English
Article number	172301
Journal	Physical Review Letters
Volume	124
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.124.172301
State	Published - 1 May 2020
Externally published	Yes

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10.1103/PhysRevLett.124.172301

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

abstract = "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",

author = "J. Adam and L. Adamczyk and Adams, \{J. R.\} and Adkins, \{J. K.\} and S. Kabana and \{STAR Collaboration\}",

note = "Publisher Copyright: {\textcopyright} 2020 American Physical Society.",

year = "2020",

month = may,

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doi = "10.1103/PhysRevLett.124.172301",

language = "English",

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AU - Adam, J.

AU - Adamczyk, L.

AU - Adams, J. R.

AU - Adkins, J. K.

AU - Kabana, S.

AU - STAR Collaboration

PY - 2020/5/1

Y1 - 2020/5/1

N2 - 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

AB - 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

UR - https://www.scopus.com/pages/publications/85084355470

U2 - 10.1103/PhysRevLett.124.172301

DO - 10.1103/PhysRevLett.124.172301

M3 - Article

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AN - SCOPUS:85084355470

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VL - 124

JO - Physical Review Letters

JF - Physical Review Letters

IS - 17

M1 - 172301

ER -

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

Abstract

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