"Table 3 (A)" of "Measurement of the central exclusive production of charged particle pairs in proton-proton collisions at $\sqrt{s} = 200$ GeV with the STAR detector at RHIC"

Results of the fit to extrapolated $d\sigma/dm(\pi^+\pi^-)$ in two ranges of azimuthal angle difference $\Delta\varphi$ between forward-scattered protons.

The fit describes the cross-section extrapolated to Lorentz-invariant phase-space defined below:
- $|y(\pi^+\pi^-)| < 0.4$
- $0.05~\mathrm{GeV}^2 < -t_1, -t_2 < 0.16~\mathrm{GeV}^2$

The experimental systematic uncertainties "(syst.)" are calculated as the quadratic sum of the differences between the nominal fit result and the result of the fit to $d\sigma/dm(\pi^+\pi^-)$ with each systematic effect. The uncertainties related to the extrapolation "(model.)" are quoted as the largest deviation from the nominal fit result.