### Heavy Quark Production in the ACOT Scheme Beyond NLO.

T. Stavreva, F. I. Olness, I. Schienbein, T. Jezo, A. Kusina, K. Kovarik & J. Y. Yu
We analyze the properties of the ACOT scheme for heavy quark production and make use of the $\msbar$ massless results at NNLO and N$^{3}$LO for the structure functions $F_{2}$ and $F_{L}$ in neutral current deep-inelastic scattering to estimate the higher order corrections. The dominant heavy quark mass effects at higher orders can be taken into account using the massless Wilson coefficients together with an appropriate slow-rescaling prescription implementing the phase space constraints. Combining the exact...