Document Type
Article
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 h0 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.
Digital Object Identifier (DOI)
Publication Info
Published in Physical Review Letters, Volume 124, Issue 7, 2020.
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Rights
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
APA Citation
Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D. N., Kolomensky, Yu. G., Fritsch, M., Koch, H., Schroeder, T., Cheaib, R., Hearty, C., Mattison, T. S., McKenna, J. A., So, R. Y., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., … Wu, S. L. (2020). Search for rare or forbidden decays of the . Physical Review Letters, 124(7). https://doi.org/10.1103/physrevlett.124.071802