"Table 5" 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"

Exponential slope of the $t$-distribution in three ranges of $m(\pi^+\pi^-)$ and two ranges of $\Delta\varphi$.

The results are obtained for the Lorentz-invariant phase-space defined below:
- $|y(\pi^+\pi^-)| < 0.4$
- $0.05~\mathrm{GeV}^2 < -t_1, -t_2 < 0.16~\mathrm{GeV}^2$