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research article
Measurement of the τ lepton mass and an upper limit on the mass difference between τ+ and τ-
The mass of the τ lepton has been measured in the decay mode τ→3πντ using a pseudomass technique. The result obtained from 414fb-1 of data collected with the Belle detector is Mτ=[1776.61±0. 13(stat)±0.35(sys)]MeV/c2. The upper limit on the relative mass difference between positive and negative τ leptons is |Mτ+-Mτ-|/ Mτ<2.8×10-4 at 90% confidence level. © 2007 The American Physical Society.
Type
research article
Web of Science ID
WOS:000247819900008
Scopus ID
2-s2.0-34547290479
Authors
Belous, K.
•
Shapkin, M.
•
Sokolov, A.
•
Abe, K.
•
Adachi, I.
•
Aihara, H.
•
Anipko, D.
•
Arinstein, K.
•
Aulchenko, V.
•
Aushev, T.
Publication date
2007
Published in
Volume
99
Issue
1
Article Number
011801
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
November 5, 2010
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