Abstract
We search for the flavor-changing neutral current decays D0→μ+μ- and D0→e+e-, and for the lepton-flavor violating decays D0→e±μ + using 660fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We find no evidence for any of these decays. We obtain significantly improved upper limits on the branching fractions: B(D0→μ+μ-)<1. 4×10-7, B(D0→e+e-)<7. 9×10-8, and B(D0→e+μ-) +B(D0→μ+e-)<2.6×10-7 at 90% confidence level.
| Original language | English |
|---|---|
| Article number | 091102 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 81 |
| Issue number | 9 |
| DOIs | |
| State | Published - 28 May 2010 |
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