2026-04-13T02:16:47Zhttps://recercat.cat/oai/requestoai:recercat.cat:2445/1749792025-12-05T16:37:15Zcom_2072_1057col_2072_478823col_2072_478917
RECERCAT
author
Graugés Pous, Eugeni
author
BABAR Collaboration
2021-03-12T10:47:05Z2021-03-12T10:47:05Z2020-02-192021-03-12T10:47:05Z
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.
cc-by (c) Lees, J.P. et al., 2020 http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess
Leptons (Física nuclear)
Mètode de Montecarlo
Leptons (Nuclear physics)
Monte Carlo method
Search for Rare or Forbidden Decays of the D-0 Meson
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion