Graugés Pous, EugeniBABAR Collaboration2021-03-092021-03-092020-06-151550-7998https://hdl.handle.net/2445/174829We present a search for seven lepton-flavor-violating neutral charm meson decays of the type D0→X0e±μ∓, where X0 represents a π0, K0S, ¯K*0, ρ0, ϕ, ω, or η meson. 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 signals are observed, and we establish 90% confidence level upper limits on the branching fractions in the range (5.0−22.5)×10−7. The limits are between 1 and 2 orders of magnitude more stringent than previous measurements.11 p.application/pdfengcc-by (c) Lees, J.P., et al., 2020http://creativecommons.org/licenses/by/3.0/es/Leptons (Física nuclear)Mètode de MontecarloLeptons (Nuclear physics)Monte Carlo methodinfo:eu-repo/semantics/article7064712021-03-09info:eu-repo/semantics/openAccess