First Measurement of Lambda(c) Baryon Production in Au plus Au Collisions at root s(NN)=200 GeV

doi:10.1103/PhysRevLett.124.172301

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	First Measurement of Lambda(c) Baryon Production in Au plus Au Collisions at root s(NN)=200 GeV
	Adam, J ; Adamczyk, L ; Adams, JR ; Adkins, JK ; Agakishiev, G ; Aggarwal, MM ; Ahammed, Z ; Alekseev, I ; Anderson, DM ; Aparin, A
刊名	PHYSICAL REVIEW LETTERS
	2020
卷号	124 期号:17 页码:-
关键词	COALESCENCE PERSPECTIVE MESONS
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.124.172301
文献子类	期刊论文
英文摘要	We report on the first measurement of the charmed baryon Lambda(+/-)(c) production at midrapidity (vertical bar y vertical bar < 1) in Au + Au collisions root s(NN) = 200 GeV collected by the STAR experiment at the Relativistic Heavy Ion Collider. The A(c)/D-0 [denoting (Lambda(+)(c) + Lambda(-)(c))/(D-0 + (D) over bar (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 (p(T)) range 3 < p(T) < 6 GeV/c. This is significantly larger than the PYTHIA model calculations for p + p collisions. The measured A(c)/D-0 ratio, as a function of p(T) 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 Lambda(c)/D-0 ratio.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/32886]
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.CAS, Nucl Phys Inst, Rez 25068, Czech Republic 2.Joint Inst Nucl Res, Dubna 141980, Russia 3.Michigan State Univ, E Lansing, MI 48824 USA 4.Natl Res Nucl Univ MEPhI, Moscow 115409, Russia 5.HBNI, Natl Inst Sci Educ & Res, Jatni 752050, India 6.Natl Cheng Kung Univ, Tainan 70101, Taiwan 7.Ohio State Univ, Columbus, OH 43210 USA 8.Panjab Univ, Chandigarh 160014, India (4 9.Penn State Univ, University Pk, PA 16802 USA 10.NRC Kurchatov Inst, Inst High Energy Phys, Protvino 142281, Russia
推荐引用方式 GB/T 7714	Adam, J,Adamczyk, L,Adams, JR,et al. First Measurement of Lambda(c) Baryon Production in Au plus Au Collisions at root s(NN)=200 GeV[J]. PHYSICAL REVIEW LETTERS,2020,124(17):-.
APA	Adam, J.,Adamczyk, L.,Adams, JR.,Adkins, JK.,Agakishiev, G.,...&Zyzak, M.(2020).First Measurement of Lambda(c) Baryon Production in Au plus Au Collisions at root s(NN)=200 GeV.PHYSICAL REVIEW LETTERS,124(17),-.
MLA	Adam, J,et al."First Measurement of Lambda(c) Baryon Production in Au plus Au Collisions at root s(NN)=200 GeV".PHYSICAL REVIEW LETTERS 124.17(2020):-.