Search for Flavor-Changing Neutral Current and Lepton-Flavor Violating Decays of D[superscript 0]-->l+l-

• Main Authors: Cowan, Ray Franklin (Contributor), Sciolla, Gabriella (Contributor), Sekula, S. J. (Contributor), Taylor, Frank E. (Contributor), Yamamoto, R. K. (Contributor)
• Other Authors: Massachusetts Institute of Technology. Department of Physics (Contributor), Massachusetts Institute of Technology. Laboratory for Nuclear Science (Contributor)
• Format: Article
• Language: English
• Published: American Physical Society, 2012-03-21T21:03:37Z.
• Subjects: Article
• Online Access: Get fulltext

We report on a search for the flavor-changing neutral current decays D0→e+e- and D0→μ+μ-, and the lepton-flavor violating decay D0→e±μ∓. The measurement is based on 122  fb-1 of data collected by the BABAR detector at the SLAC PEP-II asymmetric e+e- collider. No evidence is found for any of the decays. The upper limits on the branching fractions, at the 90% confidence level, are 1.2×10-6 for D0→e+e-, 1.3×10-6 for D0→μ+μ-, and 8.1×10-7 for D0→e±μ∓.
Alfred P. Sloan Foundation
National Science Foundation (U.S.)
United States. Dept. of Energy