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Measurement of the τ-lepton mass and an upper limit on the mass difference between τ+ and τ−

✍ Scribed by M. Shapkin

Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
304 KB
Volume
162
Category
Article
ISSN
0920-5632

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✦ Synopsis

The mass of the τ -lepton has been measured in the decay mode τ → 3πντ using a pseudomass technique. The preliminary result is 1776.71 ± 0.25(stat) ± 0.62(syst) MeV. The preliminary value of an upper limit on the relative mass difference between positive and negative τ leptons is |(M τ + -M τ -)|/Maverage is 5.0 × 10 -4 at 90% CL.

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✍ A.E. Blinov; A.S. Rudenko 📂 Article 📅 2009 🏛 Elsevier Science 🌐 English ⚖ 186 KB

The LEP-II data for the total cross-sections of electron-positron annihilation at 2E 200 GeV result in the upper limits of 3•10 -17 , 5•10 -17 , 2•10 -17 e•cm for the electric dipole moments and 4•10 -17 , 7•10 -17 , 2.5•10 -17 e•cm for the weak dipole moments of the τ -lepton, c-, and b-quarks, res