Searches for Rare and Forbidden Decays of Charm: Recent Results from FNAL

2001/01/28 by A. J. Schwartz
Physics and Astronomy · #hep-ex #hep-ph

paper · pdf

published as Frascati Phys.Ser. 20 (2001) 19-34 · 16 pages, 4 figures, contribution to HQ2K, 5th Heavy Quarks at Fixed Target, October 9-12 2000, Rio de Janeiro, Brazil

arxiv created 2001/01/28 · arxiv updated 2009/11/30

Abstract

We review results on rare and forbidden decays of D⁰, D⁺, and D⁺_s mesons from experiments at FNAL. The decay modes studied have two leptons in the final state and, if observed, would constitute evidence for flavor-changing neutral-current, lepton-flavor-violating, or lepton-number-violating processes. To date, no evidence for these decays has been observed and upper limits are obtained for their branching fractions. These limits can constrain various extensions to the Standard Model. We present new upper limits from FNAL E791 on the branching fractions for more than two dozen three- and four-body decay modes.

Related

• Search for Rare Charm Meson Decays at FNAL E791
• Search for Rare and Forbidden Charm Meson Decays at Fermilab E791
• Rare and Forbidden Decays of D Mesons
• Search for Flavor-Changing Neutral-Current Charm Decays
• Charm Decays and Spectroscopy at BABAR