  We introduce a novel mechanism for baryogenesis, in which mixed anomalies
between the hidden sector and $U(1)_{baryon}$ drive the baryon asymmetry. We
demonstrate that this mechanism occurs quite naturally in intersecting-brane
constructions of the Standard Model, and show that it solves some of the
theoretical difficulties faced in matching baryogenesis to experimental bounds.
We illustrate with a specific example model. We also discuss the possible
signals at the LHC.
