Pion Interferometry of sqrt(snn) = 130 GeV Au+Au Collisions at RHIC
C. Adler et al., Phys. Rev. Lett. 87, 082301 (2001)
Numerical values of HBT parameters
This page contains numbers for the pion correlations from the first STAR HBT paper. They are Coulomb corrected (5 fm Gaussian source assumed), corrected for merging effects ("bad systematic" for STAR-HBT insiders), and corrected for finite-momentum-resolution effects, as discussed in the paper.
Systematic errors are estimated by the size of the merging correction and the effect of varying the source size used in the Coulomb correction by +/- 1 fm.
Below, statistical uncertainties are followed by the systematic ones.
| System |
lambda |
Rout |
Rside |
Rlong |
| Piminus Mult1 low pT |
0.51 +/- 0.02 +/- 0.03 |
4.40 +/- 0.19 +/- 0.29 |
4.12 +/- 0.15 +/- 0.20 |
5.22 +/- 0.22 +/- 0.23 |
| Piminus Mult2 low pT |
0.53 +/- 0.02 +/- 0.03 |
5.34 +/- 0.15 +/- 0.37 |
5.00 +/- 0.12 +/- 0.24 |
6.23 +/- 0.17 +/- 0.39 |
| Piminus Mult3 low pT |
0.50 +/- 0.01 +/- 0.03 |
5.86 +/- 0.11 +/- 0.34 |
5.47 +/- 0.09 +/- 0.27 |
7.07 +/- 0.12 +/- 0.43 |
| Piminus Mult3 med pT |
0.63 +/- 0.02 +/- 0.06 |
5.39 +/- 0.18 +/- 0.28 |
5.48 +/- 0.15 +/- 0.30 |
5.99 +/- 0.19 +/- 0.36 |
| Piminus Mult3 hi pT |
0.71 +/- 0.03 +/- 0.08 |
4.72 +/- 0.19 +/- 0.26 |
5.28 +/- 0.18 +/- 0.29 |
5.32 +/- 0.20 +/- 0.34 |
| Piplus Mult1 low pT |
0.52 +/- 0.01 +/- 0.03 |
4.12 +/- 0.15 +/- 0.28 |
4.04 +/- 0.11 +/- 0.20 |
5.06 +/- 0.14 +/- 0.23 |
| Piplus Mult2 low pT |
0.50 +/- 0.01 +/- 0.03 |
5.01 +/- 0.15 +/- 0.35 |
4.79 +/- 0.11 +/- 0.23 |
6.20 +/- 0.16 +/- 0.39 |
| Piplus Mult3 low pT |
0.52 +/- 0.02 +/- 0.03 |
6.02 +/- 0.15 +/- 0.38 |
6.00 +/- 0.13 +/- 0.28 |
6.91 +/- 0.17 +/- 0.42 |
| Piplus Mult3 med pT |
0.57 +/- 0.02 +/- 0.05 |
5.13 +/- 0.18 +/- 0.27 |
5.19 +/- 0.15 +/- 0.29 |
5.75 +/- 0.18 +/- 0.35 |
| Piplus Mult3 hi pT |
0.63 +/- 0.03 +/- 0.07 |
4.22 +/- 0.19 +/- 0.24 |
4.95 +/- 0.18 +/- 0.37 |
5.60 +/- 0.22 +/- 0.36 |
pT binning
The multiplicity and pT cuts are listed in the paper. For plotting purposes, it is often useful to know what is the average pT or mT for singles and low-Q pairs. These are listed here. Units are in GeV/c.
| |
pT=0.125-0.225 |
pT=0.225-0.325 |
pT=0.325-0.450 |
| (pT,max-pT,min) /2 |
0.175 |
0.275 |
0.385 |
| <pT>sing |
0.1748 |
0.2732 |
0.3841 |
| <pT>low-Q pairs |
0.1705 |
0.2700 |
0.3797 |
| <mT>sing |
0.2240 |
0.3068 |
0.4087 |
| <mT>low-Q pairs |
0.2206 |
0.3039 |
0.4045 |