@article{84c0cc3241254756a4f600e3222fa564,
title = "A Measurement of the Michel Parameters in Leptonic Decays of the Tau",
abstract = "We have measured the spectral shape Michel parameters ρ and η using leptonic decays of the τ, recorded by the CLEO II detector. Assuming e - μ universality in the vectorlike couplings, we find ρeμ = 0.735 ± 0.013 ± 0.008, where the first error is statistical and the second systematic. We also present measurements for the parameters for e and μ final states separately.",
author = "{CLEO Collaboration} and R. Ammar and P. Baringer and A. Bean and D. Besson and D. Coppage and C. Darling and R. Davis and N. Hancock and S. Kotov and I. Kravchenko and N. Kwak and S. Anderson and Y. Kubota and M. Lattery and O{\textquoteright}Neill, {J. J.} and S. Patton and R. Poling and T. Riehle and V. Savinov and A. Smith and Alam, {M. S.} and Athar, {S. B.} and Z. Ling and Mahmood, {A. H.} and H. Severini and S. Timm and F. Wappler and A. Anastassov and S. Blinov and Duboscq, {J. E.} and D. Fujino and R. Fulton and Gan, {K. K.} and T. Hart and K. Honscheid and H. Kagan and R. Kass and J. Lee and Spencer, {M. B.} and M. Sung and A. Undrus and R. Wanke and A. Wolf and Zoeller, {M. M.} and B. Nemati and Richichi, {S. J.} and Ross, {W. R.} and P. Skubic and Bliss, {D. W.} and P. Rankin",
year = "1997",
month = jun,
day = "23",
doi = "10.1103/PhysRevLett.78.4686",
language = "English (US)",
volume = "78",
pages = "4686--4690",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "25",
}