Searches for rare or forbidden semileptonic charm decays
Name
Lees-2011-Searches for rare or forbidden semileptonic.pdf
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Author(s)
Dujmic, Denis
Sciolla, Gabriella
Cowan, Ray F
Date Issued
October 2011
Journal
Physical Review D
Publisher
American Physical Society
Citation
Lees, J. et al. “Searches for Rare or Forbidden Semileptonic Charm Decays.” Physical Review D 84.7 (2011): [13 pages].© 2011 American Physical Society.
Version
Final published version
Abstract
We present searches for rare or forbidden charm decays of the form Xc⁺-->h±ℓ∓ℓ⁽′⁾⁺, where X[subscript c]⁺ is a charm hadron (D⁺, D[subscript s]⁺, or Λc⁺), h± is a pion, kaon, or proton, and 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 Υ(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 1×10⁻⁶ and 44×10⁻⁶ 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.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.84.072006
