Leptoproduction of Heavy Quarks in the Fixed and Variable Flavor Schemes (CONFERENCE Version)

Abstract

We compare the results of the fixed-flavor scheme calculation of Laenen, Riemersma, Smith and van Neerven with the variable-flavor scheme calculation of Aivazis, Collins, Olness and Tung for neutral-current (photon-mediated) heavy-flavor (charm and bottom) production. We compare the structure function $F_2(x,Q^2)$ throughout phase space, and also analyze the $\mu$-dependenceWe find that the former calculation is most applicable near threshold, while the latter works well for asymptotic $Q^2$.

Comments: LaTeX format, 4 pages, 2 figures in uuencoded format. Postscript file available from ftp://smuphy.physics.smu.edu/usr/ftpdir/pub/papers . **Presented at the Eighth DPF Meeting, Albuquerque, NM, August, 1994** (Conference version of SMU-HEP/94-21.)