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We present predictions for b-quark production in photoprodcution and comparewith experimental data from HERA. Our theoretical predictions are obtained atnext-to-leading-order in the general-mass variable-flavor-number scheme, anapproach which takes into account the finite mass of the b quarks. We userealistic evolved nonperturbative fragmentation functions obtained from fits toe+e- data. We find in general good agreement of data with both the GM-VFNS andthe FFNS calculations, while the more precise ZEUS data seem to prefer theGM-VFNS predictions.

Inclusive photoproduction of bottom quarks for low and medium pT in the general-mass variable-flavour-number scheme