  The b-barb and Upsilon production cross section has been measured in
collisions of 920 GeV protons on different nuclear targets using the HERA-B
detector. On the invariant mass spectra of e+e- or mu+mu- events originating
from common vertex, the Upsilon search was performed. The identification of
b-barb events was done using the same sample via inclusive bottom quark decays
into J/psi by exploiting the longitudinal separation of the J/psi -> l+l- decay
vertices from the primary proton nucleus interaction. For both hidden and open
beauty decays, the mu+mu- and the e+e- decay channels have been reconstructed.
The most recent measurement, using data collected in 2002/2003, yields a
preliminary cross section in the combined analysis of sigma(b-barb) =
(12.3(+3.5)(-3.2)) nb/nucleon and for the hidden beauty production the
preliminary measurement of BR(Upsilon -> l+l-) x d sigma(Upsilon ->
l+l-)/dy|_(y=0) = (3.4 +-0.8) pb/nucleon.
