Chemical Potentials of Quarks Extracted from Particle Transverse Momentum Distributions in Heavy Ion Collisions at RHIC Energies

Table 2

Parameter values corresponding to the curves in Figure 3 for Au-Au and d-Au collisions at √𝑠_𝑁𝑁=200 GeV. The values for positively/negatively charged particles are given in terms of “the first value/the second value” in the case of the two values being different. The relative errors estimated for 𝑇_1,2 and 𝑘₁ are less than 6% and 0.5%, respectively.

Figure	Collision	Particle	Centrality	𝑇1 (GeV)	𝑘1	𝑇2 (GeV)	𝜒^2/dof
Figures 3(a) and 3(d)	Au-Au 200 GeV	𝜋^+/𝜋^−	0–20%	0.150	0.996	0.400	1.657/1.481
			20–40%	0.160	0.996	0.410	1.168/0.967
			0–100%	0.160	0.995	0.400	1.303/1.026
			40–60%	0.160	0.996	0.400	0.791/0.625
			60–88%	0.180	0.995	0.410	0.552/0.637
Figures 3(a) and 3(d)	d-Au 200 GeV	𝜋^+/𝜋^−	0–10%	0.180	0.998	0.420	1.531/1.144
			10–20%	0.180	0.997	0.410	1.425/1.569
			20–40%	0.175	0.996	0.410/0.405	1.478/1.581
			40–60%	0.168	0.997	0.410	1.442/1.331
			60–92%	0.165	0.997	0.415/0.418	1.741/1.935
Figures 3(b) and 3(e)	Au-Au 200 GeV	𝐾^+/𝐾^−	0–20%	0.220	0.995	0.520	0.426/0.521
			20–40%	0.220	0.996	0.520	0.507/0.657
			0–100%	0.200	0.996	0.500	0.559/0.532
			40–60%	0.200	0.996	0.500	0.272/0.221
			60–88%	0.200	0.997	0.500	0.257/0.461
Figures 3(b) and 3(e)	d-Au 200 GeV	𝐾^+/𝐾^−	0–10%	0.230	0.999	0.700/0.680	1.682/1.679
			10–20%	0.230	0.999	0.670	0.759/0.819
			20–40%	0.230	0.999	0.600/0.580	0.428/0.654
			40–60%	0.210	0.999	0.520	0.981/0.731
			60–92%	0.200	0.998	0.520/0.510	0.584/0.509
Figures 3(c) and 3(f)	Au-Au 200 GeV	𝑝/𝑝	0–20%	0.250	0.999	0.620/0.580	0.529/0.393
			20–40%	0.250	0.999	0.600/0.560	0.345/0.686
			0–100%	0.250	0.999	0.590/0.550	1.243/1.367
			40–60%	0.250	0.999	0.590/0.550	0.755/1.127
			60–88%	0.230	0.999	0.550/0.500	0.561/0.598
Figures 3(c) and 3(f)	d-Au 200 GeV	𝑝/𝑝	0–10%	0.282	0.999	0.730/0.700	0.437/0.489
			10–20%	0.282	0.999	0.730/0.680	0.366/0.419
			20–40%	0.282	0.999	0.730/0.680	0.960/0.418
			40–60%	0.260/0.250	0.999	0.710/0.646	1.022/0.901
			60–92%	0.240/0.230	0.999	0.680/0.600	1.274/1.162