Multiplicity and Pseudorapidity Distributions of Charged Particles and Photons
at forward rapidity in Au + Au Collisions at sqrt(sNN)=62.4 GeV
J. Adams et al., Phys. Rev.
C 73, 034906 (2006).
Fig.5 : Variation of Ngamma per participant pair in PMD coverage (2.3 <
eta < 3.7) and Ncharge per participant in FTPC coverage (2.9<eta<3.9)
as a function of Npart;.
Errors listed are the quadrature sum of statistical and systematic.
Npart
|
N_gamma/0.5 Npart; |
N_charge/0.5 Npart
|
| 347.25 +4.33/-3.74 |
1.50 +/- 0.14 |
0.96 +/- 0.073
|
| 293.28 +7.31/-5.58 |
1.50 +/- 0.15 |
0.98 +/- 0.075
|
| 229.01 +9.19/-7.70 |
1.60 +/- 0.16 |
1.05 +/- 0.079
|
| 162.14 +10.02/-9.53 |
1.61 +/- 0.16 |
1.11 +/- 0.084
|
| 112.03 +9.63/-9.06 |
1.60 +/- 0.16 |
1.17 +/- 0.089
|
| 74.17 +9.03/-8.52 |
1.63 +/- 0.16 |
1.22 +/- 0.093
|
| 45.78 +7.04/-7.07 |
1.75 +/- 0.16 |
1.30 +/- 0.099
|
25.90 +5.63/-5.59
|
--
|
1.34 +/- 0.1
|
13.01 +3.3/-4.04
|
--
|
1.40 +/- 0.11
|
Fig.6 : Variation of Ngamma per number of binary collision (Nbin) in PMD
coverage (2.3 < eta < 3.7) and Ncharge per number of binary collision
in FTPC coverage (2.9<eta<3.9) as a function of Npart;.
Errors listed are the quadrature sum of statistical and systematic.
Nbin
|
N_gamma/Nbin; |
N_charge/Nbin
|
| 904.3 +67.7/-62.4 |
0.285 +/- 0.032 |
0.184 +/- 0.014
|
| 713.7 +63.7/-54.8 |
0.308 +/- 0.025 |
0.20 +/- 0.015
|
| 511.8 +54.9/-48.2 |
0.361 +/- 0.029 |
0.234 +/- 0.018
|
| 320.9 +43.0/-39.2 |
0.42 +/- 0.04 |
0.281 +/- 0.021
|
| 193.5 +31.4/-30.4 |
0.47 +/- 0.05 |
0.340 +/- 0.025
|
| 109.3 +22.1/-21.8 |
0.55 +/- 0.07 |
0.418 +/- 0.032
|
| 56.6 +15.0/-14.3 |
0.72 +/- 0.1 |
0.526 +/- 0.04
|
26.8 +8.8/-9.0
|
--
|
0.64 +/- 0.049
|
11.2 +3.7/-4.8
|
--
|
0.81 +/- 0.062
|
Fig.7 : Pseudorapidity distributions of photons and charged particles
Errors are the quadratic sum of statistical and systematic errors.
|
dN_gamma/deta; 2.3<=eta;<3.7 |
| eta |
0-5% |
10-20% |
20-30% |
30-40% |
40-50% |
50-60% |
| 2.4(2.3,2.5) |
280 +/- 30.0 |
198 +/- 20.0 |
146 +/- 16.0 |
99 +/- 11.5 |
68.0 +/- 10.0 |
45.0 +/- 8.0 |
| 2.6(2.5,2.7) |
244 +/- 30.0 |
175 +/- 20.0 |
131 +/- 16.0 |
85 +/- 11.8 |
57.0 +/- 9.4 |
39.0 +/- 6.5 |
| 2.8(2.7,2.9) |
212 +/- 30.0 |
150 +/- 15.3 |
113 +/- 15.0 |
75 +/- 9.8 |
48.0 +/- 7.7 |
34.0 +/- 6.0 |
| 3.0(2.9,3.1) |
185 +/- 29.0 |
135 +/- 15.5 |
91 +/- 11.0 |
65 +/- 8.3 |
42.3 +/- 7.1 |
28.0 +/- 4.5 |
| 3.2(3.1,3.3) |
150 +/- 25.0 |
110 +/- 11.3 |
80 +/- 9.0 |
52 +/- 6.9 |
35.0 +/- 6.1 |
23.0 +/- 4.0 |
| 3.4(3.3,3.5) |
120 +/- 20.7 |
88 +/- 10.0 |
65 +/- 8.5 |
42 +/- 6.1 |
30.0 +/- 5.6 |
20.0 +/- 3.5 |
| 3.6(3.5,3.7) |
100 +/- 15.0 |
70 +/- 8.3 |
55 +/- 7.4 |
36 +/- 5.4 |
22.2 +/- 5.3 |
16.0 +/- 3.0 |
Errors are the quadratic sum of statistical and systematic errors.
|
dN_charge/deta; 2.3<=eta;<3.7 |
|
|
| eta |
0-5% |
10-20% |
20-30% |
30-40% |
40-50% |
50-60% |
| 3.0(2.9,3.1) |
263 +/- 20.0 |
182 +/- 14.0 |
136 +/- 10.3 |
96 +/- 7.0 |
65.0 +/- 5.2 |
42.0 +/- 3.2 |
| 3.2(3.1,3.3) |
211 +/- 16.0 |
147 +/- 11.0 |
111 +/- 8.5 |
79 +/- 6.0 |
55.0 +/- 4.1 |
36.0 +/- 2.5 |
| 3.4(3.3,3.5) |
166 +/- 13.0 |
120 +/- 9.0 |
91 +/- 7.0 |
65 +/- 5.0 |
47.0 +/- 3.5 |
30.0 +/- 2.0 |
| 3.6(3.5,3.7) |
129 +/- 12.0 |
99 +/- 7.0 |
75 +/- 5.3 |
57 +/- 4.0 |
39.0 +/- 3.1 |
27.0 +/- 1.1 |
| 3.8(3.7,3.9) |
99 +/- 16.0 |
76 +/- 4.5 |
58 +/- 3.5 |
47 +/- 3.0 |
33.0 +/- 2.0 |
22.0 +/- 1.5 |
Fig.10 : Half width at half maxima fo dNcharge/deta Vs. total charged particle
multiplicity normalized to centre of mass energy
Au+Au collisions at 200 GeV
N_T/CM energy
|
Width (eta_h)
|
24.8
|
3.77
|
19.3
|
3.81
|
13.7
|
3.88
|
9.35
|
4.00
|
6.12
|
3.81
|
3.74
|
4.05
|
Au+Au collisions at 130 GeV
N_T/CM energy
|
Width (eta_h)
|
31.5
|
3.55
|
24.9
|
3.75
|
17.4
|
3.72
|
11.8
|
3.73
|
7.70
|
3.87
|
4.74
|
3.85
|
Au+Au collisions at 19.6 GeV
N_T/CM energy
|
Width (eta_h)
|
85.6
|
2.27
|
68.5
|
2.37
|
51.7
|
2.49
|
37.9
|
2.47
|
26.0
|
2.62
|
|
|
p+p collisions
N_T/CM energy
|
Width (eta_h)
|
CM energy (GeV)
|
0.1
|
3.65
|
31
|
0.38
|
2.82
|
31
|
0.55
|
2.3
|
31
|
0.11
|
3.55
|
63
|
0.18
|
3.3
|
63
|
0.225
|
3.2
|
63
|
0.265
|
3.1
|
63
|
0.35
|
3.0
|
63
|
0.425
|
2.7
|
63
|
0.05
|
3.75
|
53
|
0.13
|
3.4
|
53
|
0.22
|
3.25
|
53
|
0.32
|
3.05
|
53
|
0.415
|
2.8
|
53
|
0.51
|
2.3
|
53
|
0.72
|
2.1
|
53
|
0.055
|
3.65
|
23
|
0.12
|
3.625
|
23
|
0.3
|
3.1
|
23
|
0.505
|
2.39
|
23
|
0.725
|
2.125
|
23
|
0.065
|
3.65
|
45
|
0.15
|
3.38
|
45
|
0.26
|
3.25
|
45
|
0.37
|
2.875
|
45
|
0.49
|
2.625
|
45
|
0.6
|
2.26
|
45
|
Fig.15 : dN/deta Vs. eta-ybeam for positive and negative particles
Errors are the quadratic sum of statistical and systematic errors.
eta-ybeam
|
dN_charge/deta; Positive particles |
dN_charge/eta
|
negative particles
|
| eta |
0-5% |
40-50% |
0-5% |
40-50% |
-1.19
|
0.822+/- 0.09 |
0.959+/- 0.1 |
0.691 +/- 0.069 |
0.799+/- 0.08 |
-0.99
|
0.668+/- 0.067 |
0.831+/- 0.09 |
0.544+/- 0.05 |
0.662 +/- 0.06 |
-0.79
|
0.537+/- 0.054 |
0.713+/- 0.071 |
0.421 +/- 0.04 |
0.544 +/- 0.05 |
-0.59
|
0.418+/- 0.042 |
0.606+/- 0.061 |
0.323 +/- 0.03 |
0.446+/- 0.04 |
-0.39
|
0.309+/- 0.031 |
0.495+/- 0.05 |
0.260+/- 0.019 |
0.393+/- 0.03 |
Fig.17 : Estimated rapidity distribution for neutral pion from rapidity
distribution of photons normalized to Npart.
Errors listed are the quadrature sum of statistical and systematic.
|
Estimated dN_pi0/dy0.5 Npart Vs. y-ybeam; |
| y - ybeam |
Estimated dN_pi0/dy |
| -1.8 |
0.75 +/- 0.125 |
| -1.6 |
0.65 +/- 0.11 |
| -1.4 |
0.57 +/- 0.095 |
| -1.2 |
0.50 +/- 0.085 |
| -1.0 |
0.415 +/- 0.07 |
| -0.8 |
0.33 +/- 0.056 |
| -0.6 |
0.27 +/- 0.045 |
y-ybeam
|
Estimated dN_pi/dy0.5 Npart
Vs. y-ybeam; |
Experiment and CM energy
|
-3.16
|
1.10 |
BRAHMS 200 GeV pi+
|
-2.86
|
0.934
|
BRAHMS 200 GeV pi+ |
-2.31
|
0.720
|
BRAHMS 200 GeV pi+ |
-2.21
|
0.670
|
BRAHMS 200 GeV pi+ |
-2.11
|
0.616
|
BRAHMS 200 GeV pi+ |
-2.01
|
0.539
|
BRAHMS 200 GeV pi+ |
-1.83
|
0.510
|
BRAHMS 200 GeV pi+ |
-3.16
|
1.142
|
BRAHMS 200 GeV pi- |
-2.86
|
0.989
|
BRAHMS 200 GeV pi- |
-2.31
|
0.732
|
BRAHMS 200 GeV pi- |
-2.21
|
0.683
|
BRAHMS 200 GeV pi- |
-2.11
|
0.656
|
BRAHMS 200 GeV pi- |
-2.01
|
0.547
|
BRAHMS 200 GeV pi- |
-1.83
|
0.529
|
BRAHMS 200 GeV pi- |
-2.98
|
1.022
|
NA49 17.3 GeV pi-
|
-2.78
|
0.965
|
NA49 17.3 GeV pi- |
-2.58
|
0.9175
|
NA49 17.3 GeV pi- |
-2.38
|
0.8725
|
NA49 17.3 GeV pi- |
-2.18
|
0.8075
|
NA49 17.3 GeV pi- |
-1.98
|
0.7315
|
NA49 17.3 GeV pi- |
-1.78
|
0.6615
|
NA49 17.3 GeV pi- |
-1.58
|
0.5885
|
NA49 17.3 GeV pi- |
-1.40
|
0.5025
|
NA49 17.3 GeV pi- |
-1.20
|
0.4235
|
NA49 17.3 GeV pi- |
-0.98
|
0.3440
|
NA49 17.3 GeV pi- |
-0.78
|
0.2735
|
NA49 17.3 GeV pi- |
-0.58
|
0.1955
|
NA49 17.3 GeV pi- |
-2.47
|
0.825
|
NA49 12.32 GeV pi- |
-2.27
|
0.800
|
NA49 12.32 GeV pi- |
-2.07
|
0.785
|
NA49 12.32 GeV pi- |
-1.87
|
0.720
|
NA49 12.32 GeV pi- |
-1.67
|
0.680
|
NA49 12.32 GeV pi- |
-1.47
|
0.615
|
NA49 12.32 GeV pi- |
-1.27
|
0.530
|
NA49 12.32 GeV pi- |
-1.07
|
0.450
|
NA49 12.32 GeV pi- |
-0.87
|
0.365
|
NA49 12.32 GeV pi- |
-0.67
|
0.295
|
NA49 12.32 GeV pi- |
-0.47
|
0.220
|
NA49 12.32 GeV pi- |
-0.27
|
0.160
|
NA49 12.32 GeV pi- |
-0.07
|
0.105
|
NA49 12.32 GeV pi- |
-2.13
|
0.616
|
NA49 8.77 GeV pi- |
-1.93
|
0.615
|
NA49 8.77 GeV pi- |
-1.73
|
0.590
|
NA49 8.77 GeV pi- |
-1.53
|
0.545
|
NA49 8.77 GeV pi- |
-1.33
|
0.500
|
NA49 8.77 GeV pi- |
-1.13
|
0.415
|
NA49 8.77 GeV pi- |
-0.93
|
0.345
|
NA49 8.77 GeV pi- |
-0.73
|
0.285
|
NA49 8.77 GeV pi- |
-0.53
|
0.215
|
NA49 8.77 GeV pi- |
-0.33
|
0.155
|
NA49 8.77 GeV pi- |
-0.13
|
0.110
|
NA49 8.77 GeV pi- |
-0.07
|
0.075
|
NA49 8.77 GeV pi- |
0.27
|
0.045
|
NA49 8.77 GeV pi- |
-1.52
|
0.335
|
E895 4.1 GeV pi- |
-1.42
|
0.332
|
E895 4.1 GeV pi- |
-1.32
|
0.332
|
E895 4.1 GeV pi- |
-1.22
|
0.333
|
E895 4.1 GeV pi- |
-1.12
|
0.313
|
E895 4.1 GeV pi- |
-1.02
|
0.305
|
E895 4.1 GeV pi- |
-0.92
|
0.280
|
E895 4.1 GeV pi- |
-0.82
|
0.266
|
E895 4.1 GeV pi- |
-0.72
|
0.258
|
E895 4.1 GeV pi- |
-0.62
|
0.225
|
E895 4.1 GeV pi- |
-0.52
|
0.200
|
E895 4.1 GeV pi- |
-0.42
|
0.177
|
E895 4.1 GeV pi- |
-0.32
|
0.157
|
E895 4.1 GeV pi- |
-0.22
|
0.140
|
E895 4.1 GeV pi- |
-0.12
|
0.119
|
E895 4.1 GeV pi- |
-0.02
|
0.0907
|
E895 4.1 GeV pi- |
-1.25
|
0.2099
|
E895 3.6 GeV pi- |
-1.15
|
0.2117
|
E895 3.6 GeV pi- |
-1.05
|
0.2079
|
E895 3.6 GeV pi- |
-0.95
|
0.2042
|
E895 3.6 GeV pi- |
-0.85
|
0.1919
|
E895 3.6 GeV pi- |
-0.75
|
0.1766
|
E895 3.6 GeV pi- |
-0.65
|
0.162
|
E895 3.6 GeV pi- |
-0.55
|
0.1433
|
E895 3.6 GeV pi- |
-0.45
|
0.1283
|
E895 3.6 GeV pi- |
-0.35
|
0.1098
|
E895 3.6 GeV pi- |
-0.25
|
0.0936
|
E895 3.6 GeV pi- |
-0.15
|
0.0785
|
E895 3.6 GeV pi- |
-0.05
|
0.0629
|
E895 3.6 GeV pi- |
-1.25
|
0.2099
|
E895 3.0 GeV pi- |
-1.15
|
0.2117
|
E895 3.0 GeV pi- |
-1.05
|
0.2079
|
E895 3.0 GeV pi- |
-0.95
|
0.2042
|
E895 3.0 GeV pi- |
-0.85
|
0.1919
|
E895 3.0 GeV pi- |
-0.75
|
0.1766
|
E895 3.0 GeV pi- |
-0.65
|
0.162
|
E895 3.0 GeV pi- |
-0.55
|
0.1433
|
E895 3.0 GeV pi- |
-0.45
|
0.1283
|
E895 3.0 GeV pi- |
-0.35
|
0.1098
|
E895 3.0 GeV pi- |
-0.25
|
0.0936
|
E895 3.0 GeV pi- |
-0.15
|
0.0785
|
E895 3.0 GeV pi- |
-0.05
|
0.0629
|
E895 3.0 GeV pi- |
y-ybeam
|
Estimated dN_netproton/dy0.5 Npart
Vs. y-ybeam; |
Experiment and CM energy
|
-5.41
|
0.0354
|
BRAHMS 200 GeV
|
-5.31
|
0.03966
|
BRAHMS 200 GeV |
-4.91
|
0.0397
|
BRAHMS 200 GeV |
-4.81
|
0.04106
|
BRAHMS 200 GeV |
-4.56
|
0.04296
|
BRAHMS 200 GeV |
-4.46
|
0.04285
|
BRAHMS 200 GeV |
-3.51
|
0.05879
|
BRAHMS 200 GeV |
-3.16
|
0.07395
|
BRAHMS 200 GeV |
-2.46
|
0.06946
|
BRAHMS 200 GeV |
-3.52
|
0.1718
|
NA49 17.3 GeV
|
-3.32
|
0.156
|
NA49 17.3 GeV |
-3.12
|
0.1536
|
NA49 17.3 GeV |
-2.92
|
0.1469
|
NA49 17.3 GeV |
-2.72
|
0.1591
|
NA49 17.3 GeV |
-2.52
|
0.170
|
NA49 17.3 GeV |
-2.32
|
0.176
|
NA49 17.3 GeV |
-2.12
|
0.191
|
NA49 17.3 GeV |
-1.92
|
0.1928
|
NA49 17.3 GeV |
-1.72
|
0.1983
|
NA49 17.3 GeV |
-1.52
|
0.1961
|
NA49 17.3 GeV |
-1.32
|
0.1828
|
NA49 17.3 GeV |
-1.12
|
0.1591
|
NA49 17.3 GeV |
-0.92
|
0.137
|
NA49 17.3 GeV |
-0.72
|
0.1072
|
NA49 17.3 GeV |
-0.52
|
0.100
|
NA49 17.3 GeV |
-0.55
|
0.2677
|
E917 4.6 GeV
|
-0.65
|
0.2848
|
E917 4.6 GeV |
-0.75
|
0.3085
|
E917 4.6 GeV |
-0.85
|
0.325
|
E917 4.6 GeV |
-0.95
|
0.327
|
E917 4.6 GeV |
-1.05
|
0.330
|
E917 4.6 GeV |
-1.15
|
0.3388
|
E917 4.6 GeV |
-1.25
|
0.3432
|
E917 4.6 GeV |
-1.35
|
0.3338
|
E917 4.6 GeV |
-1.45
|
0.3482
|
E917 4.6 GeV |
-1.52
|
0.3349
|
E895 4.1 GeV
|
-1.42
|
0.3323
|
E895 4.1 GeV |
-1.32
|
0.3321
|
E895 4.1 GeV |
-1.22
|
0.3333
|
E895 4.1 GeV |
-1.12
|
0.3129
|
E895 4.1 GeV |
-1.02
|
0.3060
|
E895 4.1 GeV |
-0.92
|
0.2799
|
E895 4.1 GeV |
-0.82
|
0.2659
|
E895 4.1 GeV |
-0.72
|
0.2583
|
E895 4.1 GeV |
-0.62
|
0.2251
|
E895 4.1 GeV |
-0.52
|
0.2004
|
E895 4.1 GeV |
-0.42
|
0.1770
|
E895 4.1 GeV |
-0.32
|
0.1569
|
E895 4.1 GeV |
-0.22
|
0.1402
|
E895 4.1 GeV |
-0.12
|
0.1188
|
E895 4.1 GeV |
-0.02
|
0.09074
|
E895 4.1 GeV |
-1.35
|
0.3397
|
E895 3.6 GeV
|
-1.25
|
0.332
|
E895 3.6 GeV |
-1.15
|
0.334
|
E895 3.6 GeV |
-1.05
|
0.336
|
E895 3.6 GeV |
-0.95
|
0.324
|
E895 3.6 GeV |
-0.85
|
0.304
|
E895 3.6 GeV |
-0.75
|
0.277
|
E895 3.6 GeV |
-0.65
|
0.269
|
E895 3.6 GeV |
-0.55
|
0.257
|
E895 3.6 GeV |
-0.45
|
0.2268
|
E895 3.6 GeV |
-0.35
|
0.213
|
E895 3.6 GeV |
-0.25
|
0.1732
|
E895 3.6 GeV |
-0.15
|
0.153
|
E895 3.6 GeV |
-0.05
|
0.099
|
E895 3.6 GeV |
-1.25
|
0.389
|
E895 3.0 GeV
|
-1.15
|
0.387
|
E895 3.0 GeV |
-1.05
|
0.378
|
E895 3.0 GeV |
-0.95
|
0.368
|
E895 3.0 GeV |
-0.85
|
0.349
|
E895 3.0 GeV |
-0.75
|
0.3377
|
E895 3.0 GeV |
-0.65
|
0.3019
|
E895 3.0 GeV |
-0.55
|
0.2606
|
E895 3.0 GeV |
-0.45
|
0.2349
|
E895 3.0 GeV |
-0.35
|
0.1975
|
E895 3.0 GeV |
-0.25
|
0.1713
|
E895 3.0 GeV |
-0.15
|
0.1495
|
E895 3.0 GeV |
-0.05
|
0.0998
|
E895 3.0 GeV |
If you have questions or find
any problems with this web page please send mail to
James Dunlop
.
This page was last updated on
Tue 21Mar 2006 03:21:53 AM IST