TY  - JOUR
AU  - BABAR Collaboration (Lees, J. P. et al
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
PY  - 2020
DA  - 2020//
TI  - Search for Rare or Forbidden Decays of the D-0 Meson
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 071802
EP  - 8pp
VL  - 124
IS  - 7
PB  - Amer Physical Soc
AB  - We present a search for nine lepton-number-violating and three lepton-flavor-violating neutral charm decays of the type D-0 -> h'(-) h(-) l'(+) l(+) and D-0 -> h'(-) h(+) l'(+/-) l(-/+), where h and h' represent a K or pi 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 Upsilon(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) x 10(-7). The limits are between 1 and 3 orders of magnitude more stringent than previous measurements.
SN  - 0031-9007
UR  - https://arxiv.org/abs/1905.00608
UR  - https://doi.org/10.1103/PhysRevLett.124.071802
DO  - 10.1103/PhysRevLett.124.071802
LA  - English
N1  - WOS:000515063000004
ID  - BABARCollaborationLees_etal2020
ER  -