@article{ef4393371c504c0486d59a5c13742761,
title = "Search for unstable heavy and excited leptons in e+e- collisions at √s = 170-172 GeV",
abstract = "We have searched for unstable neutral and charged heavy leptons, N and L± and for excited states of neutral and charged leptons, ν*, e*, μ*, and τ*, in e+e- collisions at centre-of-mass energies of 170 and 172 GeV using the OPAL detector at LEP. No evidence for their existence was found From the analysis of charged-current decays of pair-produced unstable heavy leptons, and of charged-current and photonic decays of pair-produced excited leptons, lower limits on their masses are derived From the analysis of charged-current and photonic decays of singly-produced excited leptons, upper limits on the ratio of the coupling to the compositeness scale, f/Λ, are determined for masses up to the kinematic limit.",
author = "{The 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 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 C. Beeston and T. Behnke and Bell, {A. N.} and Bell, {K. W.} and G. Bella and S. Bentvelsen and S. Bethke and O. Biebel and A. Biguzzi and Bird, {S. D.} and V. Blobel and Bloodworth, {I. J.} and Bloomer, {J. E.} and M. Bobinski and P. Bock and D. Bonacorsi and M. Boutemeur and Bouwens, {B. T.} 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 R. Folman",
note = "Funding Information: We would like to acknowledge financial support for this study from National Natural Science Foundation of China (51379166).",
year = "1998",
month = jan,
day = "1",
doi = "10.1007/BF01245797",
language = "English",
volume = "1",
pages = "45--64",
journal = "European Physical Journal C",
issn = "1434-6044",
publisher = "Springer New York",
number = "1-2",
}