Evidence from d+Au measurements for final-state suppression of high pT hadrons in Au+Au collisions at RHIC

Evidence from d+Au Measurements for Final-State Suppression of High-p_T Hadrons in Au+Au Collisions at RHIC
J. Adams et al., Phys. Rev. Lett. 91, 072304(2003).

Figure 1: 1/N_eventsdN/dN_ch (FTPC-Au)

Normalization is to the total number of d+Au hadronic collisions.

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	1/N_eventsdN/dN_ch (FTPC-Au)
Raw FTPC-Au N_ch	Minimum Bias (Data)	ZDC-d Single Neutron (Data)	Minimum Bias (Glauber Calculation)	ZDC-d Single Neutron (Glauber Calculation)
0	0.050+/-0.000	0.017+/-0.000	0.061	0.025
1	0.075+/-0.000	0.025+/-0.000	0.076	0.029
2	0.071+/-0.000	0.022+/-0.000	0.073	0.026
3	0.066+/-0.000	0.018+/-0.000	0.068	0.021
4	0.060+/-0.000	0.015+/-0.000	0.061	0.017
5	0.056+/-0.000	0.012+/-0.000	0.055	0.014
6	0.052+/-0.000	0.010+/-0.000	0.050	0.011
7	0.049+/-0.000	0.0084+/-0.0001	0.045	0.0090
8	0.046+/-0.000	0.0071+/-0.0001	0.042	0.0073
9	0.043+/-0.000	0.0058+/-0.0001	0.038	0.0058
10	0.040+/-0.000	0.0047+/-0.0001	0.036	0.0048
11	0.037+/-0.000	0.0039+/-0.0001	0.033	0.0037
12	0.035+/-0.000	0.0033+/-0.0001	0.032	0.0032
13	0.033+/-0.000	0.0026+/-0.0001	0.030	0.0026
14	0.030+/-0.000	0.0022+/-0.0001	0.029	0.0021
15	0.028+/-0.000	0.0018+/-0.0000	0.027	0.0018
16	0.026+/-0.000	0.0016+/-0.0000	0.025	0.0014
17	0.024+/-0.000	0.0011+/-0.0000	0.024	0.0011
18	0.022+/-0.000	0.0010+/-0.0000	0.022	0.00100
19	0.019+/-0.000	0.00078+/-0.00003	0.021	0.00078
20	0.018+/-0.000	0.00063+/-0.00003	0.019	0.00060
21	0.016+/-0.000	0.00051+/-0.00003	0.017	0.00049
22	0.014+/-0.000	0.00040+/-0.00002	0.016	0.00039
23	0.013+/-0.000	0.00032+/-0.00002	0.014	0.00032
24	0.011+/-0.000	0.00030+/-0.00002	0.013	0.00027
25	0.0097+/-0.0001	0.00019+/-0.00002	0.011	0.00018
26	0.0086+/-0.0001	0.00018+/-0.00002	0.010	0.00015
27	0.0075+/-0.0001	0.00012+/-0.00001	0.0091	0.00012
28	0.0064+/-0.0001	0.00011+/-0.00001	0.0077	0.000089
29	0.0057+/-0.0001	0.000090+/-0.000011	0.0069	0.000069
30	0.0048+/-0.0001	0.000081+/-0.000011	0.0060	0.000045
31	0.0039+/-0.0001	0.000042+/-0.000008	0.0054	0.000044
32	0.0035+/-0.0001	0.000051+/-0.000008	0.0046	0.000031
33	0.0029+/-0.0001	0.000033+/-0.000007	0.0039	0.000022
34	0.0024+/-0.0001	0.000016+/-0.000005	0.0033	0.000022
35	0.0021+/-0.0001	0.000011+/-0.000004	0.0030	0.000012
36	0.0018+/-0.0000	0.000015+/-0.000005	0.0024	0.000011
37	0.0015+/-0.0000	0.000011+/-0.000004	0.0021	0.0000085
38	0.0012+/-0.0000	0.0000055+/-0.0000027	0.0017	0.0000038
39	0.00097+/-0.00004	0.000011+/-0.000004	0.0014	0.0000066
40	0.00074+/-0.00003	0.0000041+/-0.0000024	0.0012	0.00000095
41	0.00066+/-0.00003	0.0000041+/-0.0000024	0.0011	--
42	0.00054+/-0.00003	0.0000014+/-0.0000014	0.00077	0.00000095
43	0.00045+/-0.00002	0.0000041+/-0.0000024	0.00065	--
44	0.00040+/-0.00002	--	0.00054	--
45	0.00035+/-0.00002	0.0000027+/-0.0000019	0.00051	--
46	0.00025+/-0.00002	--	0.00039	0.00000095
47	0.00023+/-0.00002	0.0000027+/-0.0000019	0.00031	--
48	0.00015+/-0.00001	0.0000027+/-0.0000019	0.00026	--
49	0.00014+/-0.00001	0.0000014+/-0.0000014	0.00019	--

Figure 2: 1/(2πp_T) d²N/dp_Tdη|_|η|<0.5

Measured total p+p NSD cross-section is 30.0 mb +/- 3.5 mb. Both inelastic and NSD differential yields quoted below for the p+p data should be multiplied by this factor to produce differential cross-sections.

Uncertainties are the quadrature sum of statistical + systematic uncertainties.

The inelastic p+p differential cross-section is obtained by applying a small p_T-dependent correction at low p_T to the NSD differential cross-section.
The correction is 7% at p_T = 400 MeV/c and linearly decreases to 0 at p_T = 1.3 GeV/c.

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	1/(2πp_T) d²N/dp_Tdη\|_\|η\|<0.5[(GeV/c)^-2]
p_T(low, high) [GeV/c]	d+Au FTPC-Au 0-20%	d+Au Minimum Bias	p+p (NSD)	p+p (Inel) (d²σ_Inel/σ_NSD)
0.45 (0.40,0.50)	--	--	0.58+/-0.04	0.62+/-0.04
0.55 (0.50,0.60)	--	--	0.35+/-0.02	0.36+/-0.02
0.65 (0.60,0.70)	--	--	0.21+/-0.01	0.22+/-0.01
0.75 (0.70,0.80)	--	--	0.13+/-0.01	0.13+/-0.01
0.85 (0.80,0.90)	--	--	0.079+/-0.004	0.082+/-0.005
0.95 (0.90,1.00)	--	--	0.051+/-0.003	0.052+/-0.003
1.05 (1.00,1.10)	0.32+/-0.03	0.16+/-0.01	0.033+/-0.002	0.034+/-0.002
1.15 (1.10,1.20)	0.23+/-0.02	0.11+/-0.01	0.022+/-0.001	0.022+/-0.001
1.25 (1.20,1.30)	0.16+/-0.01	0.081+/-0.004	0.015+/-0.001	0.015+/-0.001
1.35 (1.30,1.40)	0.12+/-0.01	0.058+/-0.003	0.010+/-0.001	0.010+/-0.001
1.45 (1.40,1.50)	0.085+/-0.007	0.042+/-0.002	0.0072+/-0.0004	0.0072+/-0.0004
1.55 (1.50,1.60)	0.062+/-0.004	0.030+/-0.001	0.0051+/-0.0003	0.0051+/-0.0003
1.65 (1.60,1.70)	0.046+/-0.003	0.022+/-0.001	0.0035+/-0.0003	0.0035+/-0.0003
1.75 (1.70,1.80)	0.034+/-0.002	0.016+/-0.001	0.0025+/-0.0002	0.0025+/-0.0002
1.85 (1.80,1.90)	0.025+/-0.001	0.012+/-0.001	0.0018+/-0.0001	0.0018+/-0.0001
1.95 (1.90,2.00)	0.019+/-0.001	0.0091+/-0.0004	0.0013+/-0.0001	0.0013+/-0.0001
2.05 (2.00,2.10)	0.014+/-0.001	0.0068+/-0.0003	0.00094+/-0.00009	0.00094+/-0.00009
2.15 (2.10,2.20)	0.010+/-0.000	0.0050+/-0.0003	0.00070+/-0.00007	0.00070+/-0.00007
2.25 (2.20,2.30)	0.0078+/-0.0004	0.0038+/-0.0002	0.00051+/-0.00006	0.00051+/-0.00006
2.35 (2.30,2.40)	0.0059+/-0.0003	0.0028+/-0.0002	0.00038+/-0.00004	0.00038+/-0.00004
2.50 (2.40,2.60)	0.0039+/-0.0003	0.0019+/-0.0001	0.00024+/-0.00003	0.00024+/-0.00003
2.70 (2.60,2.80)	0.0024+/-0.0002	0.0011+/-0.0001	0.00015+/-0.00002	0.00015+/-0.00002
2.90 (2.80,3.00)	0.0015+/-0.0001	0.00072+/-0.00005	0.000096+/-0.000010	0.000096+/-0.000010
3.16 (3.00,3.35)	0.00085+/-0.00004	0.00041+/-0.00002	0.000054+/-0.000004	0.000054+/-0.000004
3.56 (3.35,3.80)	0.00036+/-0.00002	0.00017+/-0.00001	0.000022+/-0.000002	0.000022+/-0.000002
4.07 (3.80,4.40)	0.00013+/-0.00001	0.000062+/-0.000004	0.0000078+/-0.0000006	0.0000078+/-0.0000006
4.71 (4.40,5.10)	0.000038+/-0.000004	0.000019+/-0.000002	0.0000024+/-0.0000002	0.0000024+/-0.0000002
5.50 (5.10,6.00)	0.000010+/-0.000001	0.0000052+/-0.0000006	0.00000072+/-0.00000007	0.00000072+/-0.00000007
6.44 (6.00,7.00)	0.0000023+/-0.0000003	0.0000013+/-0.0000002	0.00000019+/-0.00000002	0.00000019+/-0.00000002
7.45 (7.00,8.00)	0.00000074+/-0.00000012	0.00000040+/-0.00000006	0.000000077+/-0.000000012	0.000000077+/-0.000000012
8.45 (8.00,9.00)	0.00000020+/-0.00000004	0.00000012+/-0.00000002	0.000000024+/-0.000000006	0.000000024+/-0.000000006
9.46 (9.00,10.00)	0.000000074+/-0.000000021	0.000000050+/-0.000000009	0.000000012+/-0.000000004	0.000000012+/-0.000000004
10.84 (10.00,12.00)	0.000000028+/-0.000000009	0.000000016+/-0.000000003	--	--

Figure 3: R_AB(p_T) = (d²N/dp_T dη(AB))/(T_ABd²σ/dp_T dη(pp))

Uncertainties are the quadrature sum of statistical + point-to-point systematic uncertainties (Error bars in figure).
Quadrature sum of numerator and denominator normalization uncertainties (Error bands in figure) are indicated.

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	R_AB(p_T) = (d²N/dp_T dh(AB))/(T_ABd²s/dp_T dh(pp))
p_T [GeV/c]	d+Au FTPC-Au 0-20% < N_bin > = 15.0 +/- 1.1 Normalization Uncertainty = +/- 17.4%	d+Au Minimum Bias < N_bin > = 7.5 +/- 0.4 Normalization Uncertainty = +/- 17.4%	Au+Au Central < N_bin > = 1051 +/- 71 Normalization Uncertainty = +15.5 -15.6%
0.45	--	--	0.29+/-0.03
0.55	--	--	0.32+/-0.03
0.65	--	--	0.36+/-0.03
0.75	--	--	0.39+/-0.03
0.85	--	--	0.43+/-0.03
0.95	--	--	0.46+/-0.04
1.05	0.88+/-0.09	0.89+/-0.07	0.49+/-0.04
1.15	0.95+/-0.10	0.95+/-0.07	0.53+/-0.04
1.25	1.01+/-0.10	1.00+/-0.08	0.56+/-0.04
1.35	1.05+/-0.11	1.04+/-0.08	0.58+/-0.04
1.45	1.09+/-0.11	1.08+/-0.08	0.60+/-0.05
1.55	1.14+/-0.11	1.12+/-0.08	0.62+/-0.05
1.65	1.22+/-0.12	1.18+/-0.10	0.64+/-0.06
1.75	1.25+/-0.12	1.21+/-0.11	0.66+/-0.06
1.85	1.29+/-0.12	1.25+/-0.11	0.67+/-0.06
1.95	1.33+/-0.13	1.28+/-0.12	0.67+/-0.07
2.05	1.39+/-0.15	1.34+/-0.15	0.69+/-0.08
2.15	1.40+/-0.15	1.34+/-0.15	0.68+/-0.08
2.25	1.43+/-0.17	1.37+/-0.17	0.70+/-0.08
2.35	1.44+/-0.19	1.38+/-0.18	0.69+/-0.09
2.49	1.50+/-0.22	1.44+/-0.22	0.70+/-0.10
2.70	1.50+/-0.22	1.44+/-0.21	0.65+/-0.09
2.90	1.47+/-0.17	1.40+/-0.18	0.56+/-0.06
3.16	1.48+/-0.13	1.42+/-0.14	0.49+/-0.05
3.55	1.53+/-0.15	1.48+/-0.14	0.44+/-0.04
4.06	1.51+/-0.16	1.47+/-0.16	0.38+/-0.04
4.70	1.45+/-0.19	1.46+/-0.18	0.32+/-0.04
5.48	1.31+/-0.20	1.36+/-0.20	0.27+/-0.03
6.42	1.14+/-0.21	1.36+/-0.24	0.26+/-0.04
7.43	0.90+/-0.20	0.97+/-0.21	0.18+/-0.03
8.43	0.79+/-0.26	0.97+/-0.29	0.22+/-0.06
9.44	0.55+/-0.23	0.75+/-0.27	0.19+/-0.06

Figure 4: 1/N_Trigger dN/d(Δφ) (h⁺+h^-)

Au+Au central data is shown in a separate table due to different binning. Trigger particles are selected with 4 GeV/c < p_T< 6 GeV/c, while associated particles are selected within 2 GeV/c < p_T < p_T(trig), with |η| < 0.7 for both sets. Only statistical errors are listed. Normalization uncertainties are less than 5%.

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	1/N_Trigger dN/d(Δφ) (h⁺+h^-)
Δφ [radians]	(a) d+Au FTPC-Au 0-20%	(a) d+Au Minimum Bias	(a) p+p Minimum Bias	(b) Pedestal subtracted d+Au FTPC-Au 0-20%	(b) Pedestal subtracted p+p Minimum Bias
-1.23	0.0560+/-0.0063	0.0413+/-0.0034	0.0080+/-0.0040	0.0045+/-0.0063	0.0005+/-0.0040
-1.07	0.0489+/-0.0059	0.0370+/-0.0032	0.0101+/-0.0045	-0.0027+/-0.0059	0.0025+/-0.0045
-0.92	0.0539+/-0.0062	0.0410+/-0.0034	0.0161+/-0.0057	0.0024+/-0.0062	0.0085+/-0.0057
-0.77	0.0489+/-0.0059	0.0368+/-0.0032	0.0060+/-0.0035	-0.0027+/-0.0059	-0.0015+/-0.0035
-0.61	0.0654+/-0.0069	0.0496+/-0.0038	0.0241+/-0.0070	0.0139+/-0.0069	0.0166+/-0.0070
-0.46	0.0776+/-0.0075	0.0550+/-0.0040	0.0241+/-0.0070	0.0261+/-0.0075	0.0166+/-0.0070
-0.31	0.0891+/-0.0080	0.0809+/-0.0048	0.0483+/-0.0099	0.0376+/-0.0080	0.0407+/-0.0099
-0.15	0.1516+/-0.0104	0.1504+/-0.0065	0.1046+/-0.0145	0.1001+/-0.0104	0.0970+/-0.0145
0.00	0.1782+/-0.0113	0.1866+/-0.0073	0.2031+/-0.0202	0.1267+/-0.0113	0.1956+/-0.0202
0.15	0.1444+/-0.0102	0.1408+/-0.0063	0.1488+/-0.0173	0.0929+/-0.0102	0.1413+/-0.0173
0.31	0.0920+/-0.0081	0.0792+/-0.0048	0.0664+/-0.0116	0.0404+/-0.0081	0.0588+/-0.0116
0.46	0.0654+/-0.0069	0.0561+/-0.0040	0.0080+/-0.0040	0.0139+/-0.0069	0.0005+/-0.0040
0.61	0.0589+/-0.0065	0.0459+/-0.0036	0.0121+/-0.0049	0.0074+/-0.0065	0.0045+/-0.0049
0.77	0.0582+/-0.0065	0.0399+/-0.0034	0.0101+/-0.0045	0.0067+/-0.0065	0.0025+/-0.0045
0.92	0.0496+/-0.0060	0.0405+/-0.0034	0.0121+/-0.0049	-0.0019+/-0.0060	0.0045+/-0.0049
1.07	0.0539+/-0.0062	0.0373+/-0.0033	0.0080+/-0.0040	0.0024+/-0.0062	0.0005+/-0.0040
1.23	0.0417+/-0.0055	0.0311+/-0.0030	0.0080+/-0.0040	-0.0098+/-0.0055	0.0005+/-0.0040
1.38	0.0503+/-0.0060	0.0390+/-0.0033	0.0040+/-0.0028	-0.0012+/-0.0060	-0.0035+/-0.0028
1.53	0.0611+/-0.0066	0.0484+/-0.0037	0.0121+/-0.0049	0.0096+/-0.0066	0.0045+/-0.0049
1.69	0.0575+/-0.0064	0.0419+/-0.0035	0.0020+/-0.0020	0.0060+/-0.0064	-0.0055+/-0.0020
1.84	0.0596+/-0.0065	0.0453+/-0.0036	0.0141+/-0.0053	0.0081+/-0.0065	0.0065+/-0.0053
1.99	0.0445+/-0.0057	0.0388+/-0.0033	0.0181+/-0.0060	-0.0070+/-0.0057	0.0106+/-0.0060
2.15	0.0589+/-0.0065	0.0499+/-0.0038	0.0181+/-0.0060	0.0074+/-0.0065	0.0106+/-0.0060
2.30	0.0797+/-0.0076	0.0601+/-0.0041	0.0241+/-0.0070	0.0282+/-0.0076	0.0166+/-0.0070
2.45	0.0848+/-0.0078	0.0675+/-0.0044	0.0442+/-0.0094	0.0333+/-0.0078	0.0367+/-0.0094
2.61	0.1027+/-0.0086	0.0886+/-0.0050	0.0543+/-0.0105	0.0512+/-0.0086	0.0468+/-0.0105
2.76	0.1035+/-0.0086	0.0843+/-0.0049	0.0744+/-0.0122	0.0519+/-0.0086	0.0669+/-0.0122
2.91	0.1257+/-0.0095	0.1160+/-0.0057	0.0865+/-0.0132	0.0742+/-0.0095	0.0789+/-0.0132
3.06	0.1437+/-0.0102	0.1265+/-0.0060	0.1287+/-0.0161	0.0922+/-0.0102	0.1212+/-0.0161
3.22	0.1236+/-0.0094	0.1222+/-0.0059	0.1488+/-0.0173	0.0721+/-0.0094	0.1413+/-0.0173
3.37	0.1250+/-0.0095	0.1140+/-0.0057	0.0905+/-0.0135	0.0735+/-0.0095	0.0830+/-0.0135
3.52	0.0912+/-0.0081	0.0909+/-0.0051	0.0784+/-0.0126	0.0397+/-0.0081	0.0709+/-0.0126
3.68	0.0891+/-0.0080	0.0784+/-0.0047	0.0523+/-0.0103	0.0376+/-0.0080	0.0447+/-0.0103
3.83	0.0855+/-0.0078	0.0655+/-0.0043	0.0362+/-0.0085	0.0340+/-0.0078	0.0287+/-0.0085
3.98	0.0862+/-0.0079	0.0658+/-0.0043	0.0382+/-0.0088	0.0347+/-0.0079	0.0307+/-0.0088
4.14	0.0589+/-0.0065	0.0487+/-0.0037	0.0181+/-0.0060	0.0074+/-0.0065	0.0106+/-0.0060
4.29	0.0582+/-0.0065	0.0413+/-0.0034	0.0141+/-0.0053	0.0067+/-0.0065	0.0065+/-0.0053
4.44	0.0553+/-0.0063	0.0467+/-0.0036	0.0201+/-0.0064	0.0038+/-0.0063	0.0126+/-0.0064
4.60	0.0517+/-0.0061	0.0379+/-0.0033	0.0060+/-0.0035	0.0002+/-0.0061	-0.0015+/-0.0035
4.75	0.0503+/-0.0060	0.0368+/-0.0032	0.0161+/-0.0057	-0.0012+/-0.0060	0.0085+/-0.0057
4.90	0.0417+/-0.0055	0.0311+/-0.0030	0.0060+/-0.0035	-0.0098+/-0.0055	-0.0015+/-0.0035

Au+Au Central Data:

	1/N_Trigger dN/d(Δφ) (h⁺+h^-)
Δφ [radians]	(b) Pedestal/Elliptic Flow subtracted Au+Au Central
-1.20	-0.0111+/-0.0100
-0.90	-0.0043+/-0.0101
-0.60	0.0197+/-0.0102
-0.30	0.0534+/-0.0103
0.00	0.1769+/-0.0108
0.30	0.0839+/-0.0104
0.60	0.0134+/-0.0102
0.90	-0.0052+/-0.0101
1.20	-0.0060+/-0.0100
1.50	-0.0092+/-0.0100
1.80	0.0097+/-0.0101
2.09	0.0171+/-0.0101
2.39	-0.0002+/-0.0101
2.69	-0.0026+/-0.0101
2.99	0.0044+/-0.0102
3.29	-0.0071+/-0.0101
3.59	0.0148+/-0.0102
3.89	0.0028+/-0.0101
4.19	0.0233+/-0.0102
4.49	0.0078+/-0.0101
4.79	0.0231+/-0.0101