2013/01/01 by R. Godang, Romulus Godang, Godang, Romulus
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph
paper · pdf · doi:10.48550/arxiv.1301.0141
Contributed to the Proceedings of 36th International Conference on High Energy Physics, July 4-11, 2012, Melbourne, Australia. This work was supported by the U.S. Department of Energy under grant No. DE-FG02-96ER-40970
arxiv created 2013/01/01 · openalex publication_date 2013/01/01 · arxiv updated 2013/01/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present searches for rare charm decays of the form Xc+ → h± ℓ∓ ℓ(')+, where Xc+ is a charm hadron either D+, Ds+, or Λc+, and ℓ^(')± is an electron or muon. These modes are based on 384 fb-1 of e+ e- annihilation data collected at the Υ(4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory. We also present the flavor-changing neutral-current decays D0 → e+e-, D0 → μ+ μ-, and D0 → e± μ∓ that corresponds to an integrated luminosity of 468 fb-1 of data. The decay D0 → e+ μ- is further lepton-flavor violating, and thus occur only through very slow neutrino mixing. These decays constitute sensitive probes for possible new-physics contribution. We report new limits on the branching fractions of these decays.