back to the indexTo test these sensitivities in the model, Ray took the E802 data, and fed first only the kaon singles spectra and pairs data to freezer, and in a separate run, only the pion singles and pairs data. The results are shown below. The error bars indicate the sensitivity of the parameter to the data sets.
| Nine independent source freezeout parameters for central Si-Au at 14.6 GeV/nucleon | ||
|---|---|---|
| Value and uncertainty at 99% confidence | ||
| Property | from kaons | from pions |
| n/n_0 | 0.26 +0.17 -0.12 | 0.01 +0.59 -0.01 |
| T (MeV) | 101 +- 10 | 78 +- 20 |
| v_t (c) | 0.62 +- 0.14 | 0.77 +- 0.14 |
| v_l (c) | 0.89 +0.08 -0.20 | 0.920 +0.033 -0.056 |
| v_s (c) | 0.847 +0.052 -0.076 | 0.880 +0.014 -0.015 |
| R_t (fm) | 7.1 +- 2.5 | 9.5 +- 2.7 |
| tau_f (fm/c) | 6.6 +- 3.8 | 11.1 +- 5.2 |
| delta_tau (fm/c) | 2.9 +7.4 -2.9 | 8.4 +7.4 -4.6 |
| lambda_pi | - | 0.75 +- 0.16 |
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