Searches for rare or forbidden semileptonic charm decays

J.P. Lees, H.G. Raven, H. Snoek, Collaboration BaBar

Research output: Contribution to JournalArticleAcademicpeer-review

122 Downloads (Pure)


We present searches for rare or forbidden charm decays of the form X(c)(+) -> h(+/-)l(+/-)l((l)+), where X(c)(+) is a charm hadron (D(+), D(s)(+), or A(c)(+)), h +/- is a pion, kaon, or proton, and l((l)+/-) is an electron or muon. The analysis is based on 384 fb(-1) of e(+)e(-) annihilation data collected at or close to the gamma(4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory. No significant signal is observed for any of the 35 decay modes that are investigated. We establish 90% confidence-level upper limits on the branching fractions between 1 x 10(-6) and 44 x 10(-6) depending on the channel. In most cases, these results represent either the first limits or significant improvements on existing limits for the decay modes studied.
Original languageEnglish
Article number072006
Pages (from-to)072006
JournalPhysical Review D
Issue number7
Publication statusPublished - 2011


Dive into the research topics of 'Searches for rare or forbidden semileptonic charm decays'. Together they form a unique fingerprint.

Cite this