Standard model anomalies in curved space-time with torsion.

Using the Fujikawa and the heat-kernel methods we make a complete and detailed computation of the global, gauge, and gravitational anomalies in the standard model defined on a curved space-time with torsion. We find new contributions coming from the curvature and the torsion to the leptonic number anomaly ~so that B-L is not conserved anymore! to the U~1!Y gauge and to the mixed U~1!Y-gravitational anomalies. However, neither gauge nor gravitational new anomaly cancellation conditions for the hypercharges arise. @S0556-2821~96!05020-5#