Abstract
We present measurements of the inclusive branching fractions for the decays D+→Xe+νe and D0→Xe+νe, using 281pb-1 of data collected on the ψ(3770) resonance with the CLEO-c detector. We find B(D0→Xe+νe)=(6. 46±0.17±0.13)% and B(D+→Xe+νe)=(16.13±0. 20±0.33)%. Using the known D meson lifetimes, we obtain the ratio ΓD+sl/ΓD0sl=0.985±0.028±0.015, confirming isospin invariance at the level of 3%. The positron momentum spectra from D+ and D0 have consistent shapes.
| Original language | English (US) |
|---|---|
| Article number | 251801 |
| Journal | Physical review letters |
| Volume | 97 |
| Issue number | 25 |
| DOIs | |
| State | Published - 2006 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy
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