Search for the rare decays D →h (h (′))e+e-


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Ablikim M., Achasov M., Ahmed S., Albrecht M., Alekseev M., Amoroso A., ...Daha Fazla

Physical Review D, cilt.97, sa.7, 2018 (SCI-Expanded, Scopus) identifier identifier

Özet

We search for rare decays of D mesons to hadrons accompanied by an electron-positron pair (h(h(′))e+e-), using an e+e- collision sample corresponding to an integrated luminosity of 2.93 fb-1 collected with the BESIII detector at s=3.773 GeV. No significant signals are observed, and the corresponding upper limits on the branching fractions at the 90% confidence level are determined. The sensitivities of the results are at the level of 10-5-10-6, providing a large improvement over previous searches.