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The scattering trans-Neptunian Objects (TNOs) can be measured to smallersizes than any other distant small-body population. We use the largest sampleyet obtained, 68 discoveries, primarily by the Outer Solar System OriginsSurvey (OSSOS), to constrain the slope of its luminosity distribution, withsensitivity to much fainter absolute $H$ magnitudes than previous work. Usingthe analysis technique in Shankman et al. (2016), we confirm that a singleslope for the $H$-distribution is not an accurate representation of thescattering TNOs and Centaurs, and that a break in the distribution is required,in support of previous conclusions. A bright-end slope of $\alpha_b=0.9$transitioning to a faint-end slope $\alpha_f$ of 0.4-0.5 with a differentialnumber contrast $c$ from 1 (a knee) to 10 (a divot) provides an acceptablematch to our data. We find that break magnitudes $H_b$ of 7.7 and 8.3, valuesboth previously suggested for dynamically hot Kuiper belt populations, areequally non-rejectable for a range of $\alpha_f$ and $c$ in our statisticalanalysis. Our preferred divot $H$-distribution transitions to $\alpha_f=0.5$with a divot of contrast $c=3$ at $H_b=8.3$, while our preferred knee$H$-distribution transitions to $\alpha_f=0.4$ at $H_b=7.7$. The intrinsicpopulation of scattering TNOs required to match the OSSOS detections is$3\times10^6$ for $H_r<12$, and $9\times10^4$ for $H_r<8.66$($D\gtrsim100$~km), with Centaurs having an intrinsic population two orders ofmagnitude smaller.

OSSOS. VIII. The Transition Between Two Size Distribution Slopes in the Scattering Disk