STAR Physics Database

Azimuthal anisotropy of K⁰_s and lambda + antilambda production at midrapidity from Au+Au collisions at (s_NN) = 130 GeV
C. Adler et al., Phys. Rev. Lett. 89, 132301 (2002).

Updates on 07/14/2021 by Rongrong Ma

Fig. 3: K0s v₂ for MB events p_T = 1.409, v₂ = 0.0996 +- 0.0010 → p_T = 1.409, v₂ = 0.0996 +- 0.010

Fig.2: Elliptic flow v₂ as a function of p_T

Only statistical errors are listed. Systematic errors of +-0.005 for particle identification and background subtraction and +0 -0.005 for nonflow effects. Data measured for |y|<1.0.

		11-45%	0-11%
Particle	p_T	v₂	v₂
K⁰_s	0.349	0.036 +- 0.024
	0.654	0.0438 +- 0.0073	0.0293 +- 0.0058
	1.02	0.0820 +- 0.0065	0.0131 +- 0.0051
	1.41	0.1136+-0.0089	0.0459+-0.0067
	1.81	0.126 +- 0.014	0.058 +- 0.010
	2.203	0.136 +- 0.022	0.055 +- 0.016
	2.604	0.165 +- 0.033	0.098 +- 0.025
Lambda + antilambda	0.682	0.039 +- 0.013
	0.936	0.0566 +- 0.0087	0.0207 +- 0.0092
	1.422	0.0905 +- 0.0090	0.0300 +- 0.0093
	1.816	0.146 +- 0.012	0.067 +- 0.012
	2.207	0.135 +- 0.018	0.050 +- 0.019
	2.594	0.192 +- 0.027	0.047 +- 0.029

Fig.3: Elliptic flow v₂ as a function of p_T from minimum-bias Au+Au collisions.

Only statistical errors are listed. Strange particle systematic errors of +-0.005 for particle identification and background subtraction, and +0 -0.005 for nonflow effects. Data measured for |y|<1.0 (strange) or |η| <0.75 (charged).

Particle	p_T	v₂
Charged particles	0.175	0.0146+-0.0007
	0.225	0.0188+-0.0006
	0.275	0.0234+-0.0006
	0.325	0.0286+-0.0007
	0.375	0.0317+-0.0007
	0.425	0.0381+-0.0007
	0.475	0.0426+-0.0008
	0.525	0.0474+-0.0008
	0.575	0.0527+-0.0009
	0.625	0.0572+-0.0009
	0.675	0.0604+-0.0010
	0.725	0.0656+-0.0010
	0.775	0.0697+-0.0011
	0.825	0.0749+-0.0012
	0.875	0.0783+-0.0013
	0.925	0.0830+-0.0013
	0.975	0.0822+-0.0014
	1.025	0.0878+-0.0015
	1.075	0.0939+-0.0016
	1.125	0.0968+-0.0017
	1.175	0.1013+-0.0018
	1.225	0.1020+-0.0019
	1.275	0.1066+-0.0021
	1.325	0.1126+-0.0022
	1.375	0.1167+-0.0024
	1.425	0.1173+-0.0026
	1.475	0.1213+-0.0028
	1.525	0.1262+-0.0030
	1.575	0.1244+-0.0032
	1.625	0.1341+-0.0035
	1.675	0.1435+-0.0038
	1.725	0.1358+-0.0041
	1.775	0.1345+-0.0045
	2.025	0.1550+-0.0021
	2.475	0.1644+-0.0037
	2.925	0.1684+-0.0064
	3.375	0.185+-0.011
	3.825	0.164+-0.017
	4.275	0.157+-0.026
Lambda + antilambda	p_T	v₂
	0.68	0.044+-0.012
	0.94	0.0539+-0.0079
	1.42	0.0875+-0.0082
	1.82	0.120+-0.011
	2.21	0.102+-0.017
	2.59	0.166+-0.026
	2.93	0.145+-0.070
K⁰_s	p_T	v₂
	0.349	0.003 +- 0.039
	0.654	0.0474 +- 0.0095
	1.021	0.073 +- 0.011
	1.409	0.0996 +- 0.010
	1.808	0.114 +- 0.019
	2.204	0.160 +- 0.021
	2.604	0.150 +- 0.031
	3.027	0.124 +- 0.046

Fig.4: Integrated elliptic flow v₂ as a function of particle mass.

Only statistical errors are listed. Strange particle v₂ integrated using exponential model of yields. Integration for p_T < 2 GeV/c and |y| or |η|<1.0.

Mass	h^- Measured v₂	Hydrodynamic calculation v₂
0.14 (h^-)	0.0417+- 0.0002	0.042 -0.004 + 0.005
0.495 (K⁰_s)	0.0448+-0.0063	0.053 - 0.008 + 0.003
1.11568 (lambda + antilambda)	0.067+-0.011	0.062 - 0.005 + 0.008

Azimuthal anisotropy of K0s and lambda + antilambda production at midrapidity from Au+Au collisions at (sNN) = 130 GeV C. Adler et al., Phys. Rev. Lett. 89, 132301 (2002).

Updates on 07/14/2021 by Rongrong Ma

Fig. 3: K0s v2 for MB events pT = 1.409, v2 = 0.0996 +- 0.0010 → pT = 1.409, v2 = 0.0996 +- 0.010

Fig.2: Elliptic flow v2 as a function of pT

Fig.3: Elliptic flow v2 as a function of pT from minimum-bias Au+Au collisions.

Fig.4: Integrated elliptic flow v2 as a function of particle mass.

Azimuthal anisotropy of K⁰_s and lambda + antilambda production at midrapidity from Au+Au collisions at (s_NN) = 130 GeV
C. Adler et al., Phys. Rev. Lett. 89, 132301 (2002).

Fig. 3: K0s v₂ for MB events p_T = 1.409, v₂ = 0.0996 +- 0.0010 → p_T = 1.409, v₂ = 0.0996 +- 0.010

Fig.2: Elliptic flow v₂ as a function of p_T

Fig.3: Elliptic flow v₂ as a function of p_T from minimum-bias Au+Au collisions.

Fig.4: Integrated elliptic flow v₂ as a function of particle mass.