Energy dependence and fluctuations of anisotropic fow in Pb-Pb collisions at root s(NN)=5:02 and 2:76 TeV

doi:10.1007/JHEP07(2018)103

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	Energy dependence and fluctuations of anisotropic fow in Pb-Pb collisions at root s(NN)=5:02 and 2:76 TeV
	Acharya, S ; Acosta, FT ; Adamova, D ; Adolfsson, J ; Aggarwal, MM ; Rinella, GA ; Agnello, M ; Agrawal, N ; Ahammed, Z ; Ahn, SU
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2018
期号	7 页码:-
关键词	RELATIVISTIC NUCLEAR COLLISIONS ELLIPTIC FLOW MOMENTUM
ISSN号	1029-8479
DOI	10.1007/JHEP07(2018)103
文献子类	期刊论文
英文摘要	Measurements of anisotropic flow coefficients with two-and multi-particle cumulants for inclusive charged particles in Pb{Pb collisions at root s(NN) = 5 : 02 and 2.76TeV are reported in the pseudorapidity range vertical bar eta vertical bar < 0 : 8 and transverse momentum 0 : 2 < p(T) < 50 GeV/c. The full data sample collected by the ALICE detector in 2015 (2010), corresponding to an integrated luminosity of 12.7 (2.0) mu b(-1) in the centrality range 0{80%, is analysed. Flow coefficients up to the sixth flow harmonic (v6) are reported and a detailed comparison among results at the two energies is carried out. The pT dependence of anisotropic flow coefficients and its evolution with respect to centrality and harmonic number n are investigated. An approximate power-law scaling of the form v(n) (p(T)) similar to p(T)(n/3) is observed for all flow harmonics at low p(T) (0.2 < p(T) < 3 GeV/c). At the same time, the ratios v(n)/v(m)(n/m) are observed to be essentially independent of pT for most centralities up to about pT = 10 GeV/c. Analysing the di ff erences among higher-order cumulants of elliptic flow (v(2)), which have di ff erent sensitivities to flow fluctuations, a measurement of the standardised skewness of the event-by-event v(2) distribution P (v(2)) is reported and constraints on its higher moments are provided. The Elliptic Power distribution is used to parametrise P (v(2)), extracting its parameters from fi ts to cumulants. The measurements are compared to di ff erent model predictions in order to discriminate among initial-state models and to constrain the temperature dependence of the shear viscosity to entropy-density ratio.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/30932]
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.INFN, Lab Nazl Frascati, Frascati, Italy 2.Ctr Calcul IN2P3, Villeurbanne, France 3.Politecn Torino, Dipartimento DET, Turin, Italy 4.Moscow MV Lomonosov State Univ, DV Skobeltsyn Inst Nucl, Phys, Moscow, Russia 5.Aligarh Muslim Univ, Dept Appl Phys, Aligarh, Uttar Pradesh, India 6.Univ Wroclaw, Inst Theoret Phys, Wroclaw, Poland 7.Yerevan Phys Inst Fdn, AI Alikhanyan Natl Sci Lab, Yerevan, Armenia 8.Benemerita UnivAutonoma Puebla, Puebla, Mexico 9.Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, Kiev, Ukraine 10.Bose Inst, Dept Phys, Kolkata, India
推荐引用方式 GB/T 7714	Acharya, S,Acosta, FT,Adamova, D,et al. Energy dependence and fluctuations of anisotropic fow in Pb-Pb collisions at root s(NN)=5:02 and 2:76 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2018(7):-.
APA	Acharya, S.,Acosta, FT.,Adamova, D.,Adolfsson, J.,Aggarwal, MM.,...&Zou, S.(2018).Energy dependence and fluctuations of anisotropic fow in Pb-Pb collisions at root s(NN)=5:02 and 2:76 TeV.JOURNAL OF HIGH ENERGY PHYSICS(7),-.
MLA	Acharya, S,et al."Energy dependence and fluctuations of anisotropic fow in Pb-Pb collisions at root s(NN)=5:02 and 2:76 TeV".JOURNAL OF HIGH ENERGY PHYSICS .7(2018):-.