Charged Current Single Pion Cross Section Measurement at MiniBooNE

We present MiniBooNE's preliminary νμCC1π+ cross section measurement, calculated using the ratio of CC1π+ to CCQE events. We find the inclusive CC1π+ measurement to be below the nuance [D. Casper, Nucl. Phys. Proc. Suppl. 112, 161 (2002), hep-ph/0208030] and NEUGEN [H. Gallagher, Nucl. Phys. Proc. Suppl. 112 (2002) 188] expectations.