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Title: Search for Rare or Forbidden Decays of the D-0 Meson
Author: Graugés Pous, Eugeni
BABAR Collaboration
Keywords: Leptons (Física nuclear)
Mètode de Montecarlo
Leptons (Nuclear physics)
Monte Carlo method
Issue Date: 19-Feb-2020
Publisher: American Physical Society
Abstract: We present a search for nine lepton-number-violating and three lepton-flavor-violating neutral charm decays of the type D0→h'−h−ℓ'+ℓ+ and D0→h'−h+ℓ'±ℓ∓, where h and h′ represent a K or π meson and ℓ and ℓ′ an electron or muon. The analysis is based on 468  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 twelve modes, and we establish 90% confidence level upper limits on the branching fractions in the range (1.0-30.6)×10−7. The limits are between 1 and 3 orders of magnitude more stringent than previous measurements.
Note: Reproducció del document publicat a:
It is part of: Physical Review Letters, 2020, vol. 124, num. 7, p. 071802
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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