Measurements of exclusive semileptonic decays of D mesons

California Institute of Technology
University of Oklahoma
San Diego University of California
Syracuse University
University of Minnesota Twin Cities
Santa Barbara University of California
Carnegie Mellon University
University of Rochester
Southern Methodist University
Lawrence University of Kansas
University of Florida
Ithaca College
Harvard University
University at Albany State University of New York
Cornell University
Purdue University
Ohio State University
Vanderbilt University
University of Colorado at Boulder
University of Illinois at Urbana-Champaign

Abstract

Using a sample of integrated luminosity 1.68 fb−1 collected with the CLEO-II detector at the Cornell Electron Storage Ring, we measure the branching ratios for the dominant exclusive semileptonic decays D → Klν and D → K∗lν, using charged and neutral D mesons. We also make a precise measurement of the vector form factor for the decay D0→ K−l+ν, using a sample of 2700 events.