Determination of the Michel parameters and the τ neutrino helicity in τ decay

J. P. Alexander, C. Bebek, B. E. Berger, K. Berkelman, K. Bloom, D. G. Cassel, H. A. Cho, D. M. Coffman, D. S. Crowcroft, M. Dickson, P. S. Drell, K. M. Ecklund, R. Ehrlich, R. Elia, A. D. Foland, P. Gaidarev, R. S. Galik, B. Gittelman, S. W. Gray, D. L. Hartill & 204 others B. K. Heltsley, P. I. Hopman, J. Kandaswamy, P. C. Kim, D. L. Kreinick, T. Lee, Y. Liu, G. S. Ludwig, J. Masui, J. Mevissen, N. B. Mistry, C. R. Ng, E. Nordberg, M. Ogg, J. R. Patterson, D. Peterson, D. Riley, A. Soffer, B. Valant-Spaight, C. Ward, M. Athanas, P. Avery, C. D. Jones, M. Lohner, C. Prescott, J. Yelton, J. Zheng, G. Brandenburg, R. A. Briere, Y. S. Gao, D. Y.J. Kim, R. Wilson, H. Yamamoto, T. E. Browder, F. Li, Y. Li, J. L. Rodriguez, T. Bergfeld, B. I. Eisenstein, J. Ernst, G. E. Gladding, G. D. Gollin, R. M. Hans, E. Johnson, I. Karliner, M. A. Marsh, M. Palmer, M. Selen, J. J. Thaler, K. W. Edwards, A. Bellerive, R. Janicek, D. B. MacFarlane, K. W. McLean, P. M. Patel, A. J. Sadoff, R. Ammar, P. Baringer, A. Bean, D. Besson, D. Coppage, C. Darling, R. Davis, N. Hancock, S. Kotov, I. Kravchenko, N. Kwak, S. Anderson, Y. Kubota, M. Lattery, S. J. Lee, J. J. O’Neill, S. Patton, R. Poling, T. Riehle, V. Savinov, A. Smith, M. S. Alam, S. B. Athar, Z. Ling, A. H. Mahmood, H. Severini, S. Timm, F. Wappler, A. Anastassov, S. Blinov, J. E. Duboscq, K. D. Fisher, D. Fujino, K. K. Gan, T. Hart, K. Honscheid, H. Kagan, R. Kass, J. Lee, M. B. Spencer, M. Sung, A. Undrus, R. Wanke, A. Wolf, M. M. Zoeller, B. Nemati, S. J. Richichi, W. R. Ross, P. Skubic, M. Wood, M. Bishai, J. Fast, E. Gerndt, J. W. Hinson, N. Menon, D. H. Miller, E. I. Shibata, I. P.J. Shipsey, M. Yurko, L. Gibbons, S. Glenn, S. D. Johnson, Youngjoon Kwon, S. Roberts, E. H. Thorndike, C. P. Jessop, K. Lingel, H. Marsiske, M. L. Perl, D. Ugolini, R. Wang, X. Zhou, T. E. Coan, V. Fadeyev, I. Korolkov, Y. Maravin, I. Narsky, V. Shelkov, J. Staeck, R. Stroynowski, I. Volobouev, J. Ye, M. Artuso, A. Efimov, F. Frasconi, M. Gao, M. Goldberg, D. He, S. Kopp, G. C. Moneti, R. Mountain, S. Schuh, T. Skwarnicki, S. Stone, G. Viehhauser, X. Xing, J. Bartelt, S. E. Csorna, V. Jain, S. Marka, R. Godang, K. Kinoshita, I. C. Lai, P. Pomianowski, S. Schrenk, G. Bonvicini, D. Cinabro, R. Greene, L. P. Perera, G. J. Zhou, B. Barish, M. Chadha, S. Chan, G. Eigen, J. S. Miller, C. O’Grady, M. Schmidtler, J. Urheim, A. J. Weinstein, F. Würthwein, D. M. Asner, D. W. Bliss, W. S. Brower, G. Masek, H. P. Paar, S. Prell, V. Sharma, J. Gronberg, T. S. Hill, R. Kutschke, D. J. Lange, S. Menary, R. J. Morrison, H. N. Nelson, T. K. Nelson, C. Qiao, J. D. Richman, D. Roberts, A. Ryd, M. S. Witherell, R. Balest, B. H. Behrens, K. Cho, W. T. Ford, H. Park, P. Rankin, J. Roy, J. G. Smith

Research output: Contribution to journalArticle

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Abstract

Using the CLEO II detector at the Cornell Electron Storage Ring operated at [Formula presented] we have determined the Michel parameters ρ, ξ, and δ in [Formula presented] decay as well as the τ neutrino helicity parameter [Formula presented] in [Formula presented] decay. From a data sample of [Formula presented] produced τ pairs we analyzed events of the topologies [Formula presented] and [Formula presented] We obtain [Formula presented] [Formula presented] [Formula presented] and [Formula presented] where we have used the previously determined sign of [Formula presented] [ARGUS Collaboration, H. Albrecht et al., Z. Phys. C 58, 61 (1993); Phys. Lett. B 349, 576 (1995)]. We also present the Michel parameters as determined from the electron and muon samples separately. All results are in agreement with the standard model [Formula presented] interaction.

Original languageEnglish
Pages (from-to)5320-5329
Number of pages10
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume56
Issue number9
DOIs
Publication statusPublished - 1997 Jan 1

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neutrinos
decay

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

Alexander, J. P., Bebek, C., Berger, B. E., Berkelman, K., Bloom, K., Cassel, D. G., ... Smith, J. G. (1997). Determination of the Michel parameters and the τ neutrino helicity in τ decay. Physical Review D - Particles, Fields, Gravitation and Cosmology, 56(9), 5320-5329. https://doi.org/10.1103/PhysRevD.56.5320
Alexander, J. P. ; Bebek, C. ; Berger, B. E. ; Berkelman, K. ; Bloom, K. ; Cassel, D. G. ; Cho, H. A. ; Coffman, D. M. ; Crowcroft, D. S. ; Dickson, M. ; Drell, P. S. ; Ecklund, K. M. ; Ehrlich, R. ; Elia, R. ; Foland, A. D. ; Gaidarev, P. ; Galik, R. S. ; Gittelman, B. ; Gray, S. W. ; Hartill, D. L. ; Heltsley, B. K. ; Hopman, P. I. ; Kandaswamy, J. ; Kim, P. C. ; Kreinick, D. L. ; Lee, T. ; Liu, Y. ; Ludwig, G. S. ; Masui, J. ; Mevissen, J. ; Mistry, N. B. ; Ng, C. R. ; Nordberg, E. ; Ogg, M. ; Patterson, J. R. ; Peterson, D. ; Riley, D. ; Soffer, A. ; Valant-Spaight, B. ; Ward, C. ; Athanas, M. ; Avery, P. ; Jones, C. D. ; Lohner, M. ; Prescott, C. ; Yelton, J. ; Zheng, J. ; Brandenburg, G. ; Briere, R. A. ; Gao, Y. S. ; Kim, D. Y.J. ; Wilson, R. ; Yamamoto, H. ; Browder, T. E. ; Li, F. ; Li, Y. ; Rodriguez, J. L. ; Bergfeld, T. ; Eisenstein, B. I. ; Ernst, J. ; Gladding, G. E. ; Gollin, G. D. ; Hans, R. M. ; Johnson, E. ; Karliner, I. ; Marsh, M. A. ; Palmer, M. ; Selen, M. ; Thaler, J. J. ; Edwards, K. W. ; Bellerive, A. ; Janicek, R. ; MacFarlane, D. B. ; McLean, K. W. ; Patel, P. M. ; Sadoff, A. J. ; Ammar, R. ; Baringer, P. ; Bean, A. ; Besson, D. ; Coppage, D. ; Darling, C. ; Davis, R. ; Hancock, N. ; Kotov, S. ; Kravchenko, I. ; Kwak, N. ; Anderson, S. ; Kubota, Y. ; Lattery, M. ; Lee, S. J. ; O’Neill, J. J. ; Patton, S. ; Poling, R. ; Riehle, T. ; Savinov, V. ; Smith, A. ; Alam, M. S. ; B. Athar, S. ; Ling, Z. ; Mahmood, A. H. ; Severini, H. ; Timm, S. ; Wappler, F. ; Anastassov, A. ; Blinov, S. ; Duboscq, J. E. ; Fisher, K. D. ; Fujino, D. ; Gan, K. K. ; Hart, T. ; Honscheid, K. ; Kagan, H. ; Kass, R. ; Lee, J. ; Spencer, M. B. ; Sung, M. ; Undrus, A. ; Wanke, R. ; Wolf, A. ; Zoeller, M. M. ; Nemati, B. ; Richichi, S. J. ; Ross, W. R. ; Skubic, P. ; Wood, M. ; Bishai, M. ; Fast, J. ; Gerndt, E. ; Hinson, J. W. ; Menon, N. ; Miller, D. H. ; Shibata, E. I. ; Shipsey, I. P.J. ; Yurko, M. ; Gibbons, L. ; Glenn, S. ; Johnson, S. D. ; Kwon, Youngjoon ; Roberts, S. ; Thorndike, E. H. ; Jessop, C. P. ; Lingel, K. ; Marsiske, H. ; Perl, M. L. ; Ugolini, D. ; Wang, R. ; Zhou, X. ; Coan, T. E. ; Fadeyev, V. ; Korolkov, I. ; Maravin, Y. ; Narsky, I. ; Shelkov, V. ; Staeck, J. ; Stroynowski, R. ; Volobouev, I. ; Ye, J. ; Artuso, M. ; Efimov, A. ; Frasconi, F. ; Gao, M. ; Goldberg, M. ; He, D. ; Kopp, S. ; Moneti, G. C. ; Mountain, R. ; Schuh, S. ; Skwarnicki, T. ; Stone, S. ; Viehhauser, G. ; Xing, X. ; Bartelt, J. ; Csorna, S. E. ; Jain, V. ; Marka, S. ; Godang, R. ; Kinoshita, K. ; Lai, I. C. ; Pomianowski, P. ; Schrenk, S. ; Bonvicini, G. ; Cinabro, D. ; Greene, R. ; Perera, L. P. ; Zhou, G. J. ; Barish, B. ; Chadha, M. ; Chan, S. ; Eigen, G. ; Miller, J. S. ; O’Grady, C. ; Schmidtler, M. ; Urheim, J. ; Weinstein, A. J. ; Würthwein, F. ; Asner, D. M. ; Bliss, D. W. ; Brower, W. S. ; Masek, G. ; Paar, H. P. ; Prell, S. ; Sharma, V. ; Gronberg, J. ; Hill, T. S. ; Kutschke, R. ; Lange, D. J. ; Menary, S. ; Morrison, R. J. ; Nelson, H. N. ; Nelson, T. K. ; Qiao, C. ; Richman, J. D. ; Roberts, D. ; Ryd, A. ; Witherell, M. S. ; Balest, R. ; Behrens, B. H. ; Cho, K. ; Ford, W. T. ; Park, H. ; Rankin, P. ; Roy, J. ; Smith, J. G. / Determination of the Michel parameters and the τ neutrino helicity in τ decay. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 1997 ; Vol. 56, No. 9. pp. 5320-5329.
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title = "Determination of the Michel parameters and the τ neutrino helicity in τ decay",
abstract = "Using the CLEO II detector at the Cornell Electron Storage Ring operated at [Formula presented] we have determined the Michel parameters ρ, ξ, and δ in [Formula presented] decay as well as the τ neutrino helicity parameter [Formula presented] in [Formula presented] decay. From a data sample of [Formula presented] produced τ pairs we analyzed events of the topologies [Formula presented] and [Formula presented] We obtain [Formula presented] [Formula presented] [Formula presented] and [Formula presented] where we have used the previously determined sign of [Formula presented] [ARGUS Collaboration, H. Albrecht et al., Z. Phys. C 58, 61 (1993); Phys. Lett. B 349, 576 (1995)]. We also present the Michel parameters as determined from the electron and muon samples separately. All results are in agreement with the standard model [Formula presented] interaction.",
author = "Alexander, {J. P.} and C. Bebek and Berger, {B. E.} and K. Berkelman and K. Bloom and Cassel, {D. G.} and Cho, {H. A.} and Coffman, {D. M.} and Crowcroft, {D. S.} and M. Dickson and Drell, {P. S.} and Ecklund, {K. M.} and R. Ehrlich and R. Elia and Foland, {A. D.} and P. Gaidarev and Galik, {R. S.} and B. Gittelman and Gray, {S. W.} and Hartill, {D. L.} and Heltsley, {B. K.} and Hopman, {P. I.} and J. Kandaswamy and Kim, {P. C.} and Kreinick, {D. L.} and T. Lee and Y. Liu and Ludwig, {G. S.} and J. Masui and J. Mevissen and Mistry, {N. B.} and Ng, {C. R.} and E. Nordberg and M. Ogg and Patterson, {J. R.} and D. Peterson and D. Riley and A. Soffer and B. Valant-Spaight and C. Ward and M. Athanas and P. Avery and Jones, {C. D.} and M. Lohner and C. Prescott and J. Yelton and J. Zheng and G. Brandenburg and Briere, {R. A.} and Gao, {Y. S.} and Kim, {D. Y.J.} and R. Wilson and H. Yamamoto and Browder, {T. E.} and F. Li and Y. Li and Rodriguez, {J. L.} and T. Bergfeld and Eisenstein, {B. I.} and J. Ernst and Gladding, {G. E.} and Gollin, {G. D.} and Hans, {R. M.} and E. Johnson and I. Karliner and Marsh, {M. A.} and M. Palmer and M. Selen and Thaler, {J. J.} and Edwards, {K. W.} and A. Bellerive and R. Janicek and MacFarlane, {D. B.} and McLean, {K. W.} and Patel, {P. M.} and Sadoff, {A. J.} 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 Lee, {S. J.} and O’Neill, {J. J.} and S. Patton and R. Poling and T. Riehle and V. Savinov and A. Smith and Alam, {M. S.} and {B. Athar}, S. 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 Fisher, {K. D.} and D. Fujino 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 M. Wood and M. Bishai and J. Fast and E. Gerndt and Hinson, {J. W.} and N. Menon and Miller, {D. H.} and Shibata, {E. I.} and Shipsey, {I. P.J.} and M. Yurko and L. Gibbons and S. Glenn and Johnson, {S. D.} and Youngjoon Kwon and S. Roberts and Thorndike, {E. H.} and Jessop, {C. P.} and K. Lingel and H. Marsiske and Perl, {M. L.} and D. Ugolini and R. Wang and X. Zhou and Coan, {T. E.} and V. Fadeyev and I. Korolkov and Y. Maravin and I. Narsky and V. Shelkov and J. Staeck and R. Stroynowski and I. Volobouev and J. Ye and M. Artuso and A. Efimov and F. Frasconi and M. Gao and M. Goldberg and D. He and S. Kopp and Moneti, {G. C.} and R. Mountain and S. Schuh and T. Skwarnicki and S. Stone and G. Viehhauser and X. Xing and J. Bartelt and Csorna, {S. E.} and V. Jain and S. Marka and R. Godang and K. Kinoshita and Lai, {I. C.} and P. Pomianowski and S. Schrenk and G. Bonvicini and D. Cinabro and R. Greene and Perera, {L. P.} and Zhou, {G. J.} and B. Barish and M. Chadha and S. Chan and G. Eigen and Miller, {J. S.} and C. O’Grady and M. Schmidtler and J. Urheim and Weinstein, {A. J.} and F. W{\"u}rthwein and Asner, {D. M.} and Bliss, {D. W.} and Brower, {W. S.} and G. Masek and Paar, {H. P.} and S. Prell and V. Sharma and J. Gronberg and Hill, {T. S.} and R. Kutschke and Lange, {D. J.} and S. Menary and Morrison, {R. J.} and Nelson, {H. N.} and Nelson, {T. K.} and C. Qiao and Richman, {J. D.} and D. Roberts and A. Ryd and Witherell, {M. S.} and R. Balest and Behrens, {B. H.} and K. Cho and Ford, {W. T.} and H. Park and P. Rankin and J. Roy and Smith, {J. G.}",
year = "1997",
month = "1",
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doi = "10.1103/PhysRevD.56.5320",
language = "English",
volume = "56",
pages = "5320--5329",
journal = "Physical review D: Particles and fields",
issn = "1550-7998",
publisher = "American Physical Society",
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}

Alexander, JP, Bebek, C, Berger, BE, Berkelman, K, Bloom, K, Cassel, DG, Cho, HA, Coffman, DM, Crowcroft, DS, Dickson, M, Drell, PS, Ecklund, KM, Ehrlich, R, Elia, R, Foland, AD, Gaidarev, P, Galik, RS, Gittelman, B, Gray, SW, Hartill, DL, Heltsley, BK, Hopman, PI, Kandaswamy, J, Kim, PC, Kreinick, DL, Lee, T, Liu, Y, Ludwig, GS, Masui, J, Mevissen, J, Mistry, NB, Ng, CR, Nordberg, E, Ogg, M, Patterson, JR, Peterson, D, Riley, D, Soffer, A, Valant-Spaight, B, Ward, C, Athanas, M, Avery, P, Jones, CD, Lohner, M, Prescott, C, Yelton, J, Zheng, J, Brandenburg, G, Briere, RA, Gao, YS, Kim, DYJ, Wilson, R, Yamamoto, H, Browder, TE, Li, F, Li, Y, Rodriguez, JL, Bergfeld, T, Eisenstein, BI, Ernst, J, Gladding, GE, Gollin, GD, Hans, RM, Johnson, E, Karliner, I, Marsh, MA, Palmer, M, Selen, M, Thaler, JJ, Edwards, KW, Bellerive, A, Janicek, R, MacFarlane, DB, McLean, KW, Patel, PM, Sadoff, AJ, Ammar, R, Baringer, P, Bean, A, Besson, D, Coppage, D, Darling, C, Davis, R, Hancock, N, Kotov, S, Kravchenko, I, Kwak, N, Anderson, S, Kubota, Y, Lattery, M, Lee, SJ, O’Neill, JJ, Patton, S, Poling, R, Riehle, T, Savinov, V, Smith, A, Alam, MS, B. Athar, S, Ling, Z, Mahmood, AH, Severini, H, Timm, S, Wappler, F, Anastassov, A, Blinov, S, Duboscq, JE, Fisher, KD, Fujino, D, Gan, KK, Hart, T, Honscheid, K, Kagan, H, Kass, R, Lee, J, Spencer, MB, Sung, M, Undrus, A, Wanke, R, Wolf, A, Zoeller, MM, Nemati, B, Richichi, SJ, Ross, WR, Skubic, P, Wood, M, Bishai, M, Fast, J, Gerndt, E, Hinson, JW, Menon, N, Miller, DH, Shibata, EI, Shipsey, IPJ, Yurko, M, Gibbons, L, Glenn, S, Johnson, SD, Kwon, Y, Roberts, S, Thorndike, EH, Jessop, CP, Lingel, K, Marsiske, H, Perl, ML, Ugolini, D, Wang, R, Zhou, X, Coan, TE, Fadeyev, V, Korolkov, I, Maravin, Y, Narsky, I, Shelkov, V, Staeck, J, Stroynowski, R, Volobouev, I, Ye, J, Artuso, M, Efimov, A, Frasconi, F, Gao, M, Goldberg, M, He, D, Kopp, S, Moneti, GC, Mountain, R, Schuh, S, Skwarnicki, T, Stone, S, Viehhauser, G, Xing, X, Bartelt, J, Csorna, SE, Jain, V, Marka, S, Godang, R, Kinoshita, K, Lai, IC, Pomianowski, P, Schrenk, S, Bonvicini, G, Cinabro, D, Greene, R, Perera, LP, Zhou, GJ, Barish, B, Chadha, M, Chan, S, Eigen, G, Miller, JS, O’Grady, C, Schmidtler, M, Urheim, J, Weinstein, AJ, Würthwein, F, Asner, DM, Bliss, DW, Brower, WS, Masek, G, Paar, HP, Prell, S, Sharma, V, Gronberg, J, Hill, TS, Kutschke, R, Lange, DJ, Menary, S, Morrison, RJ, Nelson, HN, Nelson, TK, Qiao, C, Richman, JD, Roberts, D, Ryd, A, Witherell, MS, Balest, R, Behrens, BH, Cho, K, Ford, WT, Park, H, Rankin, P, Roy, J & Smith, JG 1997, 'Determination of the Michel parameters and the τ neutrino helicity in τ decay', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 56, no. 9, pp. 5320-5329. https://doi.org/10.1103/PhysRevD.56.5320

Determination of the Michel parameters and the τ neutrino helicity in τ decay. / Alexander, J. P.; Bebek, C.; Berger, B. E.; Berkelman, K.; Bloom, K.; Cassel, D. G.; Cho, H. A.; Coffman, D. M.; Crowcroft, D. S.; Dickson, M.; Drell, P. S.; Ecklund, K. M.; Ehrlich, R.; Elia, R.; Foland, A. D.; Gaidarev, P.; Galik, R. S.; Gittelman, B.; Gray, S. W.; Hartill, D. L.; Heltsley, B. K.; Hopman, P. I.; Kandaswamy, J.; Kim, P. C.; Kreinick, D. L.; Lee, T.; Liu, Y.; Ludwig, G. S.; Masui, J.; Mevissen, J.; Mistry, N. B.; Ng, C. R.; Nordberg, E.; Ogg, M.; Patterson, J. R.; Peterson, D.; Riley, D.; Soffer, A.; Valant-Spaight, B.; Ward, C.; Athanas, M.; Avery, P.; Jones, C. D.; Lohner, M.; Prescott, C.; Yelton, J.; Zheng, J.; Brandenburg, G.; Briere, R. A.; Gao, Y. S.; Kim, D. Y.J.; Wilson, R.; Yamamoto, H.; Browder, T. E.; Li, F.; Li, Y.; Rodriguez, J. L.; Bergfeld, T.; Eisenstein, B. I.; Ernst, J.; Gladding, G. E.; Gollin, G. D.; Hans, R. M.; Johnson, E.; Karliner, I.; Marsh, M. A.; Palmer, M.; Selen, M.; Thaler, J. J.; Edwards, K. W.; Bellerive, A.; Janicek, R.; MacFarlane, D. B.; McLean, K. W.; Patel, P. M.; Sadoff, A. J.; Ammar, R.; Baringer, P.; Bean, A.; Besson, D.; Coppage, D.; Darling, C.; Davis, R.; Hancock, N.; Kotov, S.; Kravchenko, I.; Kwak, N.; Anderson, S.; Kubota, Y.; Lattery, M.; Lee, S. J.; O’Neill, J. J.; Patton, S.; Poling, R.; Riehle, T.; Savinov, V.; Smith, A.; Alam, M. S.; B. Athar, S.; Ling, Z.; Mahmood, A. H.; Severini, H.; Timm, S.; Wappler, F.; Anastassov, A.; Blinov, S.; Duboscq, J. E.; Fisher, K. D.; Fujino, D.; Gan, K. K.; Hart, T.; Honscheid, K.; Kagan, H.; Kass, R.; Lee, J.; Spencer, M. B.; Sung, M.; Undrus, A.; Wanke, R.; Wolf, A.; Zoeller, M. M.; Nemati, B.; Richichi, S. J.; Ross, W. R.; Skubic, P.; Wood, M.; Bishai, M.; Fast, J.; Gerndt, E.; Hinson, J. W.; Menon, N.; Miller, D. H.; Shibata, E. I.; Shipsey, I. P.J.; Yurko, M.; Gibbons, L.; Glenn, S.; Johnson, S. D.; Kwon, Youngjoon; Roberts, S.; Thorndike, E. H.; Jessop, C. P.; Lingel, K.; Marsiske, H.; Perl, M. L.; Ugolini, D.; Wang, R.; Zhou, X.; Coan, T. E.; Fadeyev, V.; Korolkov, I.; Maravin, Y.; Narsky, I.; Shelkov, V.; Staeck, J.; Stroynowski, R.; Volobouev, I.; Ye, J.; Artuso, M.; Efimov, A.; Frasconi, F.; Gao, M.; Goldberg, M.; He, D.; Kopp, S.; Moneti, G. C.; Mountain, R.; Schuh, S.; Skwarnicki, T.; Stone, S.; Viehhauser, G.; Xing, X.; Bartelt, J.; Csorna, S. E.; Jain, V.; Marka, S.; Godang, R.; Kinoshita, K.; Lai, I. C.; Pomianowski, P.; Schrenk, S.; Bonvicini, G.; Cinabro, D.; Greene, R.; Perera, L. P.; Zhou, G. J.; Barish, B.; Chadha, M.; Chan, S.; Eigen, G.; Miller, J. S.; O’Grady, C.; Schmidtler, M.; Urheim, J.; Weinstein, A. J.; Würthwein, F.; Asner, D. M.; Bliss, D. W.; Brower, W. S.; Masek, G.; Paar, H. P.; Prell, S.; Sharma, V.; Gronberg, J.; Hill, T. S.; Kutschke, R.; Lange, D. J.; Menary, S.; Morrison, R. J.; Nelson, H. N.; Nelson, T. K.; Qiao, C.; Richman, J. D.; Roberts, D.; Ryd, A.; Witherell, M. S.; Balest, R.; Behrens, B. H.; Cho, K.; Ford, W. T.; Park, H.; Rankin, P.; Roy, J.; Smith, J. G.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 56, No. 9, 01.01.1997, p. 5320-5329.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Determination of the Michel parameters and the τ neutrino helicity in τ decay

AU - Alexander, J. P.

AU - Bebek, C.

AU - Berger, B. E.

AU - Berkelman, K.

AU - Bloom, K.

AU - Cassel, D. G.

AU - Cho, H. A.

AU - Coffman, D. M.

AU - Crowcroft, D. S.

AU - Dickson, M.

AU - Drell, P. S.

AU - Ecklund, K. M.

AU - Ehrlich, R.

AU - Elia, R.

AU - Foland, A. D.

AU - Gaidarev, P.

AU - Galik, R. S.

AU - Gittelman, B.

AU - Gray, S. W.

AU - Hartill, D. L.

AU - Heltsley, B. K.

AU - Hopman, P. I.

AU - Kandaswamy, J.

AU - Kim, P. C.

AU - Kreinick, D. L.

AU - Lee, T.

AU - Liu, Y.

AU - Ludwig, G. S.

AU - Masui, J.

AU - Mevissen, J.

AU - Mistry, N. B.

AU - Ng, C. R.

AU - Nordberg, E.

AU - Ogg, M.

AU - Patterson, J. R.

AU - Peterson, D.

AU - Riley, D.

AU - Soffer, A.

AU - Valant-Spaight, B.

AU - Ward, C.

AU - Athanas, M.

AU - Avery, P.

AU - Jones, C. D.

AU - Lohner, M.

AU - Prescott, C.

AU - Yelton, J.

AU - Zheng, J.

AU - Brandenburg, G.

AU - Briere, R. A.

AU - Gao, Y. S.

AU - Kim, D. Y.J.

AU - Wilson, R.

AU - Yamamoto, H.

AU - Browder, T. E.

AU - Li, F.

AU - Li, Y.

AU - Rodriguez, J. L.

AU - Bergfeld, T.

AU - Eisenstein, B. I.

AU - Ernst, J.

AU - Gladding, G. E.

AU - Gollin, G. D.

AU - Hans, R. M.

AU - Johnson, E.

AU - Karliner, I.

AU - Marsh, M. A.

AU - Palmer, M.

AU - Selen, M.

AU - Thaler, J. J.

AU - Edwards, K. W.

AU - Bellerive, A.

AU - Janicek, R.

AU - MacFarlane, D. B.

AU - McLean, K. W.

AU - Patel, P. M.

AU - Sadoff, A. J.

AU - Ammar, R.

AU - Baringer, P.

AU - Bean, A.

AU - Besson, D.

AU - Coppage, D.

AU - Darling, C.

AU - Davis, R.

AU - Hancock, N.

AU - Kotov, S.

AU - Kravchenko, I.

AU - Kwak, N.

AU - Anderson, S.

AU - Kubota, Y.

AU - Lattery, M.

AU - Lee, S. J.

AU - O’Neill, J. J.

AU - Patton, S.

AU - Poling, R.

AU - Riehle, T.

AU - Savinov, V.

AU - Smith, A.

AU - Alam, M. S.

AU - B. Athar, S.

AU - Ling, Z.

AU - Mahmood, A. H.

AU - Severini, H.

AU - Timm, S.

AU - Wappler, F.

AU - Anastassov, A.

AU - Blinov, S.

AU - Duboscq, J. E.

AU - Fisher, K. D.

AU - Fujino, D.

AU - Gan, K. K.

AU - Hart, T.

AU - Honscheid, K.

AU - Kagan, H.

AU - Kass, R.

AU - Lee, J.

AU - Spencer, M. B.

AU - Sung, M.

AU - Undrus, A.

AU - Wanke, R.

AU - Wolf, A.

AU - Zoeller, M. M.

AU - Nemati, B.

AU - Richichi, S. J.

AU - Ross, W. R.

AU - Skubic, P.

AU - Wood, M.

AU - Bishai, M.

AU - Fast, J.

AU - Gerndt, E.

AU - Hinson, J. W.

AU - Menon, N.

AU - Miller, D. H.

AU - Shibata, E. I.

AU - Shipsey, I. P.J.

AU - Yurko, M.

AU - Gibbons, L.

AU - Glenn, S.

AU - Johnson, S. D.

AU - Kwon, Youngjoon

AU - Roberts, S.

AU - Thorndike, E. H.

AU - Jessop, C. P.

AU - Lingel, K.

AU - Marsiske, H.

AU - Perl, M. L.

AU - Ugolini, D.

AU - Wang, R.

AU - Zhou, X.

AU - Coan, T. E.

AU - Fadeyev, V.

AU - Korolkov, I.

AU - Maravin, Y.

AU - Narsky, I.

AU - Shelkov, V.

AU - Staeck, J.

AU - Stroynowski, R.

AU - Volobouev, I.

AU - Ye, J.

AU - Artuso, M.

AU - Efimov, A.

AU - Frasconi, F.

AU - Gao, M.

AU - Goldberg, M.

AU - He, D.

AU - Kopp, S.

AU - Moneti, G. C.

AU - Mountain, R.

AU - Schuh, S.

AU - Skwarnicki, T.

AU - Stone, S.

AU - Viehhauser, G.

AU - Xing, X.

AU - Bartelt, J.

AU - Csorna, S. E.

AU - Jain, V.

AU - Marka, S.

AU - Godang, R.

AU - Kinoshita, K.

AU - Lai, I. C.

AU - Pomianowski, P.

AU - Schrenk, S.

AU - Bonvicini, G.

AU - Cinabro, D.

AU - Greene, R.

AU - Perera, L. P.

AU - Zhou, G. J.

AU - Barish, B.

AU - Chadha, M.

AU - Chan, S.

AU - Eigen, G.

AU - Miller, J. S.

AU - O’Grady, C.

AU - Schmidtler, M.

AU - Urheim, J.

AU - Weinstein, A. J.

AU - Würthwein, F.

AU - Asner, D. M.

AU - Bliss, D. W.

AU - Brower, W. S.

AU - Masek, G.

AU - Paar, H. P.

AU - Prell, S.

AU - Sharma, V.

AU - Gronberg, J.

AU - Hill, T. S.

AU - Kutschke, R.

AU - Lange, D. J.

AU - Menary, S.

AU - Morrison, R. J.

AU - Nelson, H. N.

AU - Nelson, T. K.

AU - Qiao, C.

AU - Richman, J. D.

AU - Roberts, D.

AU - Ryd, A.

AU - Witherell, M. S.

AU - Balest, R.

AU - Behrens, B. H.

AU - Cho, K.

AU - Ford, W. T.

AU - Park, H.

AU - Rankin, P.

AU - Roy, J.

AU - Smith, J. G.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - Using the CLEO II detector at the Cornell Electron Storage Ring operated at [Formula presented] we have determined the Michel parameters ρ, ξ, and δ in [Formula presented] decay as well as the τ neutrino helicity parameter [Formula presented] in [Formula presented] decay. From a data sample of [Formula presented] produced τ pairs we analyzed events of the topologies [Formula presented] and [Formula presented] We obtain [Formula presented] [Formula presented] [Formula presented] and [Formula presented] where we have used the previously determined sign of [Formula presented] [ARGUS Collaboration, H. Albrecht et al., Z. Phys. C 58, 61 (1993); Phys. Lett. B 349, 576 (1995)]. We also present the Michel parameters as determined from the electron and muon samples separately. All results are in agreement with the standard model [Formula presented] interaction.

AB - Using the CLEO II detector at the Cornell Electron Storage Ring operated at [Formula presented] we have determined the Michel parameters ρ, ξ, and δ in [Formula presented] decay as well as the τ neutrino helicity parameter [Formula presented] in [Formula presented] decay. From a data sample of [Formula presented] produced τ pairs we analyzed events of the topologies [Formula presented] and [Formula presented] We obtain [Formula presented] [Formula presented] [Formula presented] and [Formula presented] where we have used the previously determined sign of [Formula presented] [ARGUS Collaboration, H. Albrecht et al., Z. Phys. C 58, 61 (1993); Phys. Lett. B 349, 576 (1995)]. We also present the Michel parameters as determined from the electron and muon samples separately. All results are in agreement with the standard model [Formula presented] interaction.

UR - http://www.scopus.com/inward/record.url?scp=0000352537&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000352537&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.56.5320

DO - 10.1103/PhysRevD.56.5320

M3 - Article

VL - 56

SP - 5320

EP - 5329

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 1550-7998

IS - 9

ER -