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 language | English |
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Article number | 012003 |
Number of pages | 13 |
Journal | Physical Review D |
Volume | 110 |
Issue number | 1 |
DOIs | |
Publication status | Published - Jul-2024 |