| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1848031 | Nuclear Physics B - Proceedings Supplements | 2007 | 5 Pages |
Abstract
The mass of the τ-lepton has been measured in the decay mode τ→3πντ using a pseudomass technique. The obtained result, based on 414 fb−1 of data collected by the Belle detector, is Mτ=(1776.71±0.13(stat.)±0.35(sys.)) MeV/c2. The value of an upper limit on the relative mass difference between positive and negative τ leptons is |(Mτ+−Mτ−)|/Mτ is 2.8×10−4 at 90% confidence level.
Related Topics
Physical Sciences and Engineering
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Nuclear and High Energy Physics
