Abstract
We report results of a search for flavor-changing neutral current (FCNC), lepton flavor, and lepton-number violating decays of the (and its antiparticle) into three and four bodies. Using data from Fermilab charm hadroproduction experiment E791, we examine modes with two leptons (muons or electrons) and a , , or vector meson or a nonresonant , , or pair of pseudoscalar mesons. No evidence for any of these decays is found. Therefore, we present branching-fraction upper limits at 90% confidence level for the 27 decay modes examined (18 new).
- Received 31 October 2000
DOI:https://doi.org/10.1103/PhysRevLett.86.3969
©2001 American Physical Society