  We have searched for evidence of physics beyond the standard model in events
that include an energetic photon and an energetic b-quark jet, produced in 85pb
of ppbar collisions at 1.8 TeV at the Tevatron Collider at Fermilab. This
signature, containing at least one gauge boson and a third-generation quark,
could arise in the production and decay of a pair of new particles, such as
those predicted by Supersymmetry, leading to a production rate exceeding
standard model predictions. We also search these events for anomalous
production of missing transverse energy, additional jets and leptons (e, mu and
tau), and additional b quarks. We find no evidence for any anomalous production
of gamma-b or gamma-b+X events. We present limits on two supersymmetric models:
a model where the photon is produced in the decay chi2->gamma chi1, and a model
where the photon is produced in the neutralino decay into the Gravitino LSP,
chi1 -> gamma G. We also present our limits in a model-independent form and
test methods of applying model-independent limits.
