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

doi:10.1016/j.nuclphysa.2018.10.050

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	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, JR ; Adkins, JK ; Agakishiev, G ; Aggarwal, MM ; Ahammed, Z ; Alekseev, I ; Anderson, DM
刊名	NUCLEAR PHYSICS A
	2019
卷号	982 期号:-页码:659—662
ISSN号	0375-9474
DOI	10.1016/j.nuclphysa.2018.10.050
文献子类	期刊论文
英文摘要	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.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31700]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Tsinghua Univ, Beijing 100084, Peoples R China; 2.Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA; 3.Abilene Christian Univ, Abilene, TX 79699 USA; 4.AGH Univ Sci & Technol, FPACS, PL-30059 Krakow, Poland; 5.Alikhanov Inst Theoret & Expt Phys, Moscow 117218, Russia; 6.Argonne Natl Lab, Argonne, IL 60439 USA; 7.Brookhaven Natl Lab, Upton, NY 11973 USA; 8.Univ Calif Berkeley, Berkeley, CA 94720 USA; 9.Univ Calif Davis, Davis, CA 95616 USA; 10.Univ Calif Los Angeles, Los Angeles, CA 90095 USA;
推荐引用方式 GB/T 7714	Radhakrishnan, S,Adam, J,Adamczyk, L,et al. Measurements of open charm production in Au plus Au collisions at root s(NN)=200 GeV with the STAR experiment at RHIC[J]. NUCLEAR PHYSICS A,2019,982(-):659—662.
APA	Radhakrishnan, S.,Adam, J.,Adamczyk, L.,Adams, JR.,Adkins, JK.,...&Zyzak, M.(2019).Measurements of open charm production in Au plus Au collisions at root s(NN)=200 GeV with the STAR experiment at RHIC.NUCLEAR PHYSICS A,982(-),659—662.
MLA	Radhakrishnan, S,et al."Measurements of open charm production in Au plus Au collisions at root s(NN)=200 GeV with the STAR experiment at RHIC".NUCLEAR PHYSICS A 982.-(2019):659—662.