Centrality and transverse momentum dependence of D-0-meson production at mid-rapidity in Au plus Au collisions ats root S-NN=200 GeV

doi:10.1103/PhysRevC.99.034908

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	Centrality and transverse momentum dependence of D-0-meson production at mid-rapidity in Au plus Au collisions ats root S-NN=200 GeV
	Adam, J ; Adamczyk, L ; Adams, JR ; Adkins, JK ; Agakishiev, G ; Aggarwal, MM ; Ahammed, Z ; Alekseev, I ; Anderson, DM ; Aoyama, R
刊名	PHYSICAL REVIEW C
	2019
卷号	99 期号:3 页码:—
关键词	PARTICLE-PRODUCTION PB COLLISIONS CHARM DYNAMICS MESONS TPC
ISSN号	2469-9985
DOI	10.1103/PhysRevC.99.034908
文献子类	期刊论文
英文摘要	We report a new measurement of D-0-meson production at mid-rapidity (vertical bar y vertical bar < 1) in Au + Au collisions at root S-NN= 200 GeV utilizing the heavy flavor tracker, a high resolution silicon detector at the STAR experiment. Invariant yields of D-0 mesons with transverse momentum P-T less than or similar to 9 GeV/c are reported in various centrality bins (0-10%, 10-20%, 20-40%, 40-60%, and 60-80%). Blast-wave thermal models are used to fit the D-0-meson P-T spectra to study D-0 hadron kinetic freeze-out properties. The average radial flow velocity extracted from the fit is considerably smaller than that of light hadrons (pi, K, and p), but comparable to that of hadrons containing multiple strange quarks (phi, Xi(-)), indicating that D-0 mesons kinetically decouple from the system earlier than light hadrons. The calculated D-0 nuclear modification factors reaffirm that charm quarks suffer a large amount of energy loss in the medium, similar to those of light quarks for P-T > 4GeV/c in central 0-10% Au + Au collisions. At low P-T , the nuclear modification factors show a characteristic structure qualitatively consistent with the expectation from model predictions that charm quarks gain sizable collective motion during the medium evolution. The improved measurements are expected to offer new constraints to model calculations and help gain further insights into the hot and dense medium created in these collisions.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31501]
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.AGH Univ Sci & Technol, FPACS, PL-30059 Krakow, Poland; 2.Alikhanov Inst Theoret & Expt Phys, Moscow 117218, Russia; 3.Abilene Christian Univ, Abilene, TX 79699 USA; 4.Argonne Natl Lab, Argonne, IL 60439 USA; 5.Brookhaven Natl Lab, Upton, NY 11973 USA; 6.Univ Calif Berkeley, Berkeley, CA 94720 USA; 7.Univ Calif Davis, Davis, CA 95616 USA; 8.Univ Calif Los Angeles, Los Angeles, CA 90095 USA; 9.Univ Calif Riverside, Riverside, CA 92521 USA; 10.Cent China Normal Univ, Wuhan 430079, Hubei, Peoples R China;
推荐引用方式 GB/T 7714	Adam, J,Adamczyk, L,Adams, JR,et al. Centrality and transverse momentum dependence of D-0-meson production at mid-rapidity in Au plus Au collisions ats root S-NN=200 GeV[J]. PHYSICAL REVIEW C,2019,99(3):—.
APA	Adam, J.,Adamczyk, L.,Adams, JR.,Adkins, JK.,Agakishiev, G.,...&Zyzak, M.(2019).Centrality and transverse momentum dependence of D-0-meson production at mid-rapidity in Au plus Au collisions ats root S-NN=200 GeV.PHYSICAL REVIEW C,99(3),—.
MLA	Adam, J,et al."Centrality and transverse momentum dependence of D-0-meson production at mid-rapidity in Au plus Au collisions ats root S-NN=200 GeV".PHYSICAL REVIEW C 99.3(2019):—.