Search for the leptonic decays D∗+ →e+νe and D∗+ →μ+νμ

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Abstract

We present the first search for the leptonic decays D∗+→e+νe and D∗+→μ+νμ by analyzing a data sample of electron-positron collisions recorded with the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV, corresponding to an integrated luminosity of 6.32 fb-1. No significant signal is observed. The upper limits on the branching fractions for D∗+→e+νe and D∗+→μ+νμ are set to be 1.1×10-5 and 4.3×10-6 at 90% confidence level, respectively.
Original languageEnglish
Article number012003
Number of pages13
JournalPhysical Review D
Volume110
Issue number1
DOIs
Publication statusPublished - Jul-2024

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