We search for the leptonic decay D+ → e+νe using an collision data sample with an integrated luminosity of 20.3 fb-1 collected with the BESIII detector at a center-of-mass energy of 3.773 GeV. Significant signal is not observed, and an upper limit on the branching fraction of D+ → e+νe is set as 9.7x10^-7, at a confidence level of 90%. Our upper limit is an order of magnitude smaller than the previous limit for this decay mode.

Search for the leptonic decay D+ --> e+ nu_e

Garzia I.;
2025

Abstract

We search for the leptonic decay D+ → e+νe using an collision data sample with an integrated luminosity of 20.3 fb-1 collected with the BESIII detector at a center-of-mass energy of 3.773 GeV. Significant signal is not observed, and an upper limit on the branching fraction of D+ → e+νe is set as 9.7x10^-7, at a confidence level of 90%. Our upper limit is an order of magnitude smaller than the previous limit for this decay mode.
2025
Ablikim, M.; Achasov, M. N.; Adlarson, P.; Afedulidis, O.; Ai, X. C.; Aliberti, R.; Amoroso, A.; An, Q.; Bai, Y.; Bakina, O.; Balossino, I.; Ban, Y.; ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2600813
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