ISSN - 09205632, Nuclear Physics B - Proceedings Supplements, 2009, vol. 189, p. 21-23
Tau mass measurement at KEDR
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 behavior around the production threshold. The preliminary result based on 15.2 pb-1 of data is mτ = 1776.69- 0.19 + 0.17 ± 0.15 MeV. © 2009.