We present a search for nine lepton-number-violating and three lepton-flavor-violating neutral charm decays of the type D0→h′-h-′++ and D0→h′-h+′±, where h and h′ represent a K or π meson and and ′ an electron or muon. The analysis is based on 468 fb-1 of e+e- annihilation data collected at or close to the (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.

Язык оригиналаанглийский
Номер статьи071802
Число страниц8
ЖурналPhysical Review Letters
Номер выпуска7
СостояниеОпубликовано - 19 февр. 2020


Подробные сведения о темах исследования «Search for Rare or Forbidden Decays of the D0 Meson». Вместе они формируют уникальный семантический отпечаток (fingerprint).