@article{8da11a1cc0454a8c99ef0e3af85041da,
title = "An upper limit on the anomalous magnetic moment of the τ lepton",
abstract = "Using radiative Z0 → τ+τ- γ events collected with the OPAL detector at LEP at √s = MZ during 1990-95, a direct study of the electromagnetic current at the τγ vertex has been performed in terms of the anomalous magnetic form factor F2 of the T lepton. The analysis is based on a data sample of 1429 e+e- → τ+τ- γ events which are examined for a deviation from the expectation with F2 = 0. From the non-observation of anomalous τ+τ- γ production a limit of - 0.068 < F2 < 0.065 is obtained. This can also be interpreted as a limit on the electric dipole form factor F3 as |eF3| < 3.7 × 10-16 e cm. The above ranges are valid at the 95% confidence level.",
author = "{OPAL Collaboration} and K. Ackerstaff and G. Alexander and J. Allison and N. Altekamp and Anderson, {K. J.} and S. Anderson and S. Arcelli and S. Asai and Ashby, {S. F.} and D. Axen and G. Azuelos and Ball, {A. H.} and E. Barberio and Barlow, {R. J.} and R. Bartoldus and Batley, {J. R.} and S. Baumann and J. Bechtluft and T. Behnke and Bell, {K. W.} and G. Bella and S. Bentvelsen and S. Bethke and S. Betts and O. Biebel and A. Biguzzi and Bird, {S. D.} and V. Blobel and Bloodworth, {I. J.} and M. Bobinski and P. Bock and D. Bonacorsi and M. Boutemeur and S. Braibant and L. Brigliadori and Brown, {R. M.} and Burckhart, {H. J.} and C. Burgard and R. B{\"u}rgin and P. Capiluppi and Carnegie, {R. K.} and Carter, {A. A.} and Carter, {J. R.} and Chang, {C. Y.} and Charlton, {D. G.} and D. Chrisman and Clarke, {P. E.L.} and I. Cohen and Conboy, {J. E.} and R. Folman",
note = "Funding Information: Japanese Ministry of Education, Science and Culture (the Monbusho) and a grant under the Monbusho International ",
year = "1998",
month = jul,
day = "9",
doi = "10.1016/S0370-2693(98)00520-6",
language = "English",
volume = "431",
pages = "188--198",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",
number = "1-2",
}