Measurements of open charm production in Au plus Au collisions at root s(NN)=200 GeV with the STAR experiment at RHIC

Radhakrishnan, S.; Adam, J.; Adamczyk, L.; Adams, J. R.; Adkins, J. K.; Agakishiev, G.; Bielčík, J.; Bielčíková, Jana; Chaloupka, P.; Federič, Pavol; Harlenderová, A.; Holub, L.; Kocan, M.; Kosarzewski, L. K.; Kramárik, L.; Kvapil, J.; Lidrych, J.; Líčeník, R.; Matonoha, O.; Moravcová, Z.; Rusňák, Jan; Rusňáková, O.; Šimko, Miroslav; Šumbera, Michal; Vaněk, Jan

doi:https://dx.doi.org/10.1016/j.nuclphysa.2018.10.050

Number of the records: 1

Measurements of open charm production in Au plus Au collisions at root s(NN)=200 GeV with the STAR experiment at RHIC

1.

SYSNO ASEP	0502304
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Measurements of open charm production in Au plus Au collisions at root s(NN)=200 GeV with the STAR experiment at RHIC
Author(s)	Radhakrishnan, S. (US) Adam, J. (US) Adamczyk, L. (PL) Adams, J. R. (US) Adkins, J. K. (US) Agakishiev, G. (RU) Bielčík, J. (CZ) Bielčíková, Jana (UJF-V)_{RID, ORCID, SAI} Chaloupka, P. (CZ) Federič, Pavol (UJF-V)_{ORCID, SAI} Harlenderová, A. (CZ) Holub, L. (CZ) Kocan, M. (CZ) Kosarzewski, L. K. (CZ) Kramárik, L. (CZ) Kvapil, J. (CZ) Lidrych, J. (CZ) Líčeník, R. (CZ) Matonoha, O. (CZ) Moravcová, Z. (CZ) Rusňák, Jan (UJF-V)_{RID, ORCID, SAI} Rusňáková, O. (CZ) Šimko, Miroslav (UJF-V)_{ORCID, SAI} Šumbera, Michal (UJF-V)_{RID, ORCID, SAI} Vaněk, Jan (UJF-V)_{ORCID, SAI}
Number of authors	349
Source Title	Nuclear Physics. A. - : Elsevier - ISSN 0375-9474 Roč. 982, č. 2 (2019), s. 659-662
Number of pages	4 s.
Publication form	Print - P
Action	27th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2018)
Event date	13.05.2018 - 19.05.2018
VEvent location	Venice
Country	IT - Italy
Event type	WRD
Language	eng - English
Country	NL - Netherlands
Keywords	STAR ; quark gluon plasma ; charm quark production ; charm quark hadronization ; heavy flavor energy loss
Subject RIV	BG - Nuclear, Atomic and Molecular Physics, Colliders
OECD category	Nuclear physics
Method of publishing	Open access
Institutional support	UJF-V - RVO:61389005
UT WOS	000457515500150
EID SCOPUS	85060138951
DOI	10.1016/j.nuclphysa.2018.10.050
Annotation	We report in these proceedings on the measurements of collision centrality and transverse momentum (p(T)) dependences of the Lambda(+/-)(c) production in Au+Au collisions at root s(NN) = 200 GeV, using the STAR Heavy Flavor Tracker (HFT). The Lambda(+/-)(c) signal significance is greatly improved with the addition of the high-statistics data set collected in 2016 and the use of a supervised machine learning method for topological reconstruction of the decay vertices. The measured Lambda(+/-)(c)/D-0 ratio shows a significant enhancement compared to the PYTHIA prediction for p+p collisions, across the measured p(T) range. We also report on the updated measurements of D-0 nuclear modification factors R-AA and R-CP using the 2014 data with the HFT. The measured D-0 R-AA in central collisions is lower than unity across the p(T) interval of the measurement. The D-0 yields show strong suppression at high p(T) (> 6 GeV/c) in central collisions, consistent with that of light flavor hadrons. The c (c) over bar production cross section per binary nucleon collision at midrapidity in Au+Au collisions at 200 GeV is extracted based on the various charm hadron measurements by STAR. It is observed that while the charm hadrochemistry is significantly modified in Au+Au collisions compared to p+p collisions, the c (c) over bar production cross section at midrapidity remains consistent between Au+Au and p+p collisions.
Workplace	Nuclear Physics Institute
Contact	Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
Year of Publishing	2020
Electronic address	https://doi.org/10.1016/j.nuclphysa.2018.10.050

Number of the records: 1