Multiplicity and Pseudorapidity Distributions of Photons in Au + Au Collisions at sqrt(sNN)=62.4 GeV
J. Adams et al., Phys. Rev. Lett.95, 062301 (2005).
Fig.2
: Pseudorapidity distributions of photons
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 |
Fig.3
: Variation of Ngamma per participant pair in PMD coverage (2.3 < eta < 3.7) as a function of Npart;.
Errors listed are the quadrature sum of statistical and systematic.
| N_gamma/0.5 Npart; |
|---|
Npart | Ngamma |
| 347.25 +4.33/-3.74 | 1.50 +/- 0.14 |
| 293.28 +7.31/-5.58 | 1.50 +/- 0.15 |
| 229.01 +9.19/-7.70 | 1.60 +/- 0.16 |
| 162.14 +10.02/-9.53 | 1.61 +/- 0.16 |
| 112.03 +9.63/-9.06 | 1.60 +/- 0.16 |
| 74.17 +9.03/-8.52 | 1.63 +/- 0.16 |
| 45.78 +7.04/-7.07 | 1.75 +/- 0.16 |
Fig.5
: 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 |
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Thu 12 Aug 2005 03:21:53 AM IST