Non-linear flow modes of identified particles in Pb-Pb collisions at root S-NN=5.02 TeV

doi:10.1007/JHEP06(2020)147

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	Non-linear flow modes of identified particles in Pb-Pb collisions at root S-NN=5.02 TeV
	Acharya, S ; Acosta, FT ; Adam, J ; Adamova, D ; Adler, A ; Adolfsson, J ; Aggarwal, MM ; Rinella, GA ; Agnello, M ; Agrawal, N
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2020
期号	6 页码:-
关键词	ELLIPTIC FLOW TRANSVERSE-MOMENTUM ANISOTROPIC FLOW PSEUDORAPIDITY FLUCTUATIONS DEPENDENCE
ISSN号	1029-8479
DOI	10.1007/JHEP06(2020)147
文献子类	期刊论文
英文摘要	The p(T)-differential non-linear flow modes, v(4,22), v(5,32), v(6, 33) and v(6,222) for pi(+/-), K-+/-, K-S(0), p + (p) over bar, Lambda + (Lambda) over bar and phi-meson have been measured for the first time at root SNN = 5.02 TeV in Pb-Pb collisions with the ALICE detector at the Large Hadron Collider. The results were obtained with a multi-particle technique, correlating the identified hadrons with reference charged particles from a different pseudorapidity region. These non-linear observables probe the contribution from the second and third order initial spatial anisotropy coefficients to higher flow harmonics. All the characteristic features observed in previous p(T) -differential anisotropic flow measurements for various particle species are also present in the non-linear flow modes, i.e. increase of magnitude with increasing centrality percentile, mass ordering at low p(T )and particle type grouping in the intermediate p(T) range. Hydrodynamical calculations (iEBE-VISHNU) that use different initial conditions and values of shear and bulk viscosity to entropy density ratios are confronted with the data at low transverse momenta. These calculations exhibit a better agreement with the anisotropic flow coefficients than the non-linear flow modes. These observations indicate that non-linear flow modes can provide additional discriminatory power in the study of initial conditions as well as new stringent constraints to hydrodynamical calculations.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/33035]
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, Sez Bari, Bari, Italy 2.Tech Univ Kosice, Kosice, Slovakia 3.Sezione Ist Nazl Fis Nucl, Trieste, Italy 4.Yerevan Phys Inst, AI Alikhanyan Natl Sci Lab, Yerevan, Armenia 5.Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, Kiev, Ukraine 6.Bose Inst, Dept Phys, Kolkata, India 7.Bose Inst, Ctr Astroparticle Phys & Space Sci, Kolkata, India 8.Budker Inst Nucl Phys, Novosibirsk, Russia 9.Calif Polytechn State Univ, San Luis Obispo, CA USA 10.Cent China Normal Univ, Wuhan, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Acharya, S,Acosta, FT,Adam, J,et al. Non-linear flow modes of identified particles in Pb-Pb collisions at root S-NN=5.02 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2020(6):-.
APA	Acharya, S.,Acosta, FT.,Adam, J.,Adamova, D.,Adler, A.,...&Zmeskal, J.(2020).Non-linear flow modes of identified particles in Pb-Pb collisions at root S-NN=5.02 TeV.JOURNAL OF HIGH ENERGY PHYSICS(6),-.
MLA	Acharya, S,et al."Non-linear flow modes of identified particles in Pb-Pb collisions at root S-NN=5.02 TeV".JOURNAL OF HIGH ENERGY PHYSICS .6(2020):-.