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Using 116.1 fb(-1) of data collected by the BABAR detector, we present an analysis of xi(c)(0) production in B decays and from the cc continuum, with the xi(c)(0) decaying into omega- K+ and xi- pi+ final states. We measure the ratio of branching fractions B(xi(c)(0) --> omega- K+)/B(xi(c)(0) --> xi- pi+) spectrum is measured on and 40 MeV below the upsilon(4S) resonance. From these spectra the branching fraction product B(B --> xi(c)(0)X) x B(xi(c)(0) --> xi- pi+) is measured to be (2.11 +/- 0.19 +/- 0.25) x 10(-4), and the cross-section product sigma(e+ e- --> xi(c)(0)X) x B(xi(c)(0) --> xi- pi+) from the continuum is measured to be (388 +/- 39 +/- 41) fb at a center-of-mass energy of 10.58 GeV.

We search for invisible decays of the Υ (1S) meson using a sample of 91.4 × 10 6 Υ (3S) mesons collected at the BABAR/PEP-II B Factory. We select events containing the decay Υ (3S) → π + π − Υ (1S) and search for evidence of an undetectable Υ (1S) decay recoiling against the dipion system. We set an upper limit on the branching fraction B(Υ (1S) → invisible) < 3.0 × 10 −4 at the 90% confidence level.