We present a search for seven lepton-flavor-violating neutral charm meson decays of the type D0→X0e±μ, where X0 represents a π0, KS0, K̄∗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 (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.

Search for lepton-flavor-violating decays D0 →x0e±μ SEARCH for LEPTON-FLAVOR-VIOLATING DECAYS ⋯ LEES J. P. et al / 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., Golubev, V.B., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - STAMPA. - 101:11(2020), pp. 112003.11200301-112003.11200311. [10.1103/PhysRevD.101.112003]

Search for lepton-flavor-violating decays D0 →x0e±μ SEARCH for LEPTON-FLAVOR-VIOLATING DECAYS ⋯ LEES J. P. et al

Bomben M.;Lanceri L.;Vitale L.;
2020-01-01

Abstract

We present a search for seven lepton-flavor-violating neutral charm meson decays of the type D0→X0e±μ, where X0 represents a π0, KS0, K̄∗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 (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.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2982880
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