Leptonic and Semileptonic Charm Decays from CLEO-c

Abstract

I describe CLEO-c purely leptonic decay results leading to fD+=(222.6 +/- 16.7^{+2.8}_{-3.4}) MeV, fDs+=(280.1 +/- 11.6 +/- 6.0) MeV, and fDs+/fD+=1.26 +/- 0.11 +/-0.03. Form-factor measurements in Cabibbo favored and suppressed pseudoscalar decays are presented. Some comparisons are made with theoretical predictions.

Comments: Presented at 4th Int. Workshop on the Unitary Triangle, CKM 2006, Nagoya, Japan, Dec. 2006; 5 pages, 9 figures