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

doi:10.1103/PhysRevLett.124.172301

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

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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 - May 1 2020

Bibliographical note

Publisher Copyright:
© 2020 American Physical Society.

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.124.172301

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@article{8af83c733e4a4876afaeae830763981a,

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 G. Agakishiev and Aggarwal, {M. M.} and Z. Ahammed and I. Alekseev and Anderson, {D. M.} and A. Aparin and Aschenauer, {E. C.} and Ashraf, {M. U.} and Atetalla, {F. G.} and A. Attri and Averichev, {G. S.} and V. Bairathi and K. Barish and A. Behera and R. Bellwied and A. Bhasin and J. Bielcik and J. Bielcikova and Bland, {L. C.} and Bordyuzhin, {I. G.} and Brandenburg, {J. D.} and Brandin, {A. V.} and J. Butterworth and H. Caines and {Calder{\'o}n De La Barca S{\'a}nchez}, M. and D. Cebra and I. Chakaberia and P. Chaloupka and Chan, {B. K.} and Chang, {F. H.} and Z. Chang and N. Chankova-Bunzarova and A. Chatterjee and D. Chen and Chen, {J. H.} and X. Chen and Z. Chen and J. Cheng and M. Cherney and M. Chevalier and S. Choudhury and W. Christie and Crawford, {H. J.} and M. Csan{\'a}d and M. Daugherity and R. Fatemi",

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

year = "2020",

month = may,

day = "1",

doi = "10.1103/PhysRevLett.124.172301",

language = "English",

volume = "124",

number = "17",

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TY - JOUR

T1 - First Measurement of Λc Baryon Production in Au+Au Collisions at sNN =200 GeV

AU - Adam, J.

AU - Adamczyk, L.

AU - Adams, J. R.

AU - Adkins, J. K.

AU - Agakishiev, G.

AU - Aggarwal, M. M.

AU - Ahammed, Z.

AU - Alekseev, I.

AU - Anderson, D. M.

AU - Aparin, A.

AU - Aschenauer, E. C.

AU - Ashraf, M. U.

AU - Atetalla, F. G.

AU - Attri, A.

AU - Averichev, G. S.

AU - Bairathi, V.

AU - Barish, K.

AU - Behera, A.

AU - Bellwied, R.

AU - Bhasin, A.

AU - Bielcik, J.

AU - Bielcikova, J.

AU - Bland, L. C.

AU - Bordyuzhin, I. G.

AU - Brandenburg, J. D.

AU - Brandin, A. V.

AU - Butterworth, J.

AU - Caines, H.

AU - Calderón De La Barca Sánchez, M.

AU - Cebra, D.

AU - Chakaberia, I.

AU - Chaloupka, P.

AU - Chan, B. K.

AU - Chang, F. H.

AU - Chang, Z.

AU - Chankova-Bunzarova, N.

AU - Chatterjee, A.

AU - Chen, D.

AU - Chen, J. H.

AU - Chen, X.

AU - Chen, Z.

AU - Cheng, J.

AU - Cherney, M.

AU - Chevalier, M.

AU - Choudhury, S.

AU - Christie, W.

AU - Crawford, H. J.

AU - Csanád, M.

AU - Daugherity, M.

AU - Fatemi, R.

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

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UR - http://www.scopus.com/inward/citedby.url?scp=85084355470&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.124.172301

DO - 10.1103/PhysRevLett.124.172301

M3 - Article

C2 - 32412276

AN - SCOPUS:85084355470

SN - 0031-9007

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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