Search for the semileptonic decay Ds+ →π0e+νe

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Abstract

We present the first search for the semileptonic decay Ds+→π0e+νe using 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. This decay is expected to be sensitive to π0-η mixing. No significant signal is observed. We set an upper limit of 6.4×10-5 on the branching fraction at the 90% confidence level.

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Ablikim, M., Achasov, M. N., Adlarson, P., Albrecht, M., Aliberti, R., Amoroso, A., … Zou, J. H. (2022). Search for the semileptonic decay Ds+ →π0e+νe. Physical Review D, 106(11). https://doi.org/10.1103/PhysRevD.106.112004

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