production in antiproton-proton collisionsAbstract
There is a sizable and systematic discrepancy between
experimental data on the 
b production in
, γp and γγ collisions
and existing theoretical calculations within perturbative QCD.
Before interpreting this discrepancy as a signal of new physics, it
is important to understand quantitatively the ambiguities of
conventional calculations. In this paper the uncertainty coming from
renormalization and factorization scale dependence of finite order
perturbation calculations of the total cross section of
b production in collisions
is discussed in detail. It is shown that the mentioned discrepancy
is reduced significantly if these scales are fixed via the
Principle of Minimal Sensitivity.
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