| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1848029 | Nuclear Physics B - Proceedings Supplements | 2007 | 7 Pages |
Abstract
The status of the experiment on the precise τ lepton mass measurement running at the VEPP-4M collider with the KEDR detector is reported. The mass value is evaluated from the τ+τ− cross section behaviour around the production threshold. The preliminary result based on 6.7 pb−1 of data is . Using 0.8 pb−1 of data collected at the ψ′ peak the preliminary result is also obtained: Γee⋅Bττ(ψ′)=7.2±2.1 eV.
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