Search for anomalous weak dipole moments of the τ lepton

A. Heister; S. Schael; R. Barate; I. de Bonis; D. Decamp; C. Goy; J. P. Lees; E. Merle; M. N. Minard; B. Pietrzyk; S. Bravo; M. P. Casado; M. Chmeissani; J. M. Crespo; E. Fernandez; M. Fernandez-Bosman; L. Garrido; M. Martinez; A. Pacheco; H. Ruiz; A. Colaleo; D. Creanza; M. de Palma; G. Iaselli; G. Maggi; M. Maggi; S. Nuzzo; A. Ranieri; G. Raso; F. Ruggieri; G. Selvaggi; L. Silvestris; P. Tempesta; A. Tricomi; G. Zito; X. Huang; J. Lin; Q. Ouyang; T. Wang; Y. Xie; R. Xu; S. Xue; J. Zhang; L. Zhang; W. Zhao; D. Abbaneo; P. Azzurri; O. Buchmüller; M. Cattaneo; F. Cerutti; B. Clerbaux; H. Drevermann; R. W. Forty; M. Frank; F. Gianotti; J. B. Hansen; J. Harvey; D. E. Hutchcroft; P. Janot; B. Jost; M. Kado; P. Mato; A. Moutoussi; F. Ranjard; L. Rolandi; D. Schlatter; O. Schneider; G. Sguazzoni; W. Tejessy; F. Teubert; A. Valassi; I. Videau; J. Ward; F. Badaud; A. Falvard; P. Gay; P. Henrard; J. Jousset; B. Michel; S. Monteil; J. C. Montret; D. Pallin; P. Perret; J. D. Hansen; J. R. Hansen; P. H. Hansen; B. S. Nilsson; A. Kyriakis; C. Markou; E. Simopoulou; A. Vayaki; K. Zachariadou; A. Blondel; G. Bonneaud; J. C. Brient; A. Rougé; M. Rumpf; M. Swynghedauw; M. Verderi; H. Videau; V. Ciulli; E. Focardi; G. Parrini; A. Antonelli; M. Antonelli; G. Bencivenni; F. Bossi; G. Capon; V. Chiarella; P. Laurelli; G. Mannocchi; G. P. Murtas; L. Passalacqua; M. Pepe-Altarelli; J. G. Lynch; P. Negus; V. O'Shea; C. Raine; A. S. Thompson; S. Wasserbaech; R. Cavanaugh; C. Geweniger; P. Hanke; V. Hepp; E. E. Kluge; A. Putzer; H. Stenzel; K. Tittel; M. Wunsch; R. Beuselinck; D. M. Binnie; W. Cameron; P. J. Dornan; M. Girone; N. Marinelli; J. K. Sedgbeer; J. C. Thompson; V. M. Ghete; P. Girtler; E. Kneringer; D. Kuhn; G. Rudolph; E. Bouhova-Thacker; C. K. Bowdery; A. J. Finch; F. Foster; G. Hughes; R. W.L. Jones; M. R. Pearson; N. A. Robertson; K. Jakobs; K. Kleinknecht; B. Renk; H. G. Sander; H. Wachsmuth; C. Zeitnitz; A. Bonissent; P. Coyle; O. Leroy; P. Payre; D. Rousseau; M. Talby; F. Ragusa; A. David; H. Dietl; G. Ganis; K. Hüttmann; G. Lütjens; W. Männer; H. G. Moser; R. Settles; W. Wiedenmann; G. Wolf; J. Boucrot; O. Callot; M. Davier; L. Duflot; J. F. Grivaz; Ph Heusse; A. Jacholkowska; J. Lefrançois; J. J. Veillet; C. Yuan; G. Bagliesi; T. Boccali; L. Foà; A. Giammanco; A. Giassi; F. Ligabue; A. Messineo; F. Palla; G. Sanguinetti; A. Sciabà; R. Tenchini; A. Venturi; P. G. Verdini; G. A. Blair; G. Cowan; M. G. Green; T. Medcalf; A. Misiejuk; J. A. Strong; P. Teixeira-Dias; R. W. Clifft; T. R. Edgecock; P. R. Norton; I. R. Tomalin; B. Bloch-Devaux; P. Colas; E. Lançon; M. C. Lemaire; E. Locci; P. Perez; J. Rander; J. P. Schuller; B. Vallage; N. Konstantinidis; A. M. Litke; G. Taylor; C. N. Booth; S. Cartwright; F. Combley; M. Lehto; L. F. Thompson; A. Böhrer; S. Brandt; C. Grupen; A. Ngac; G. Prange; G. Giannini; J. Rothberg; S. R. Armstrong; K. Berkelman; K. Cranmer; D. P.S. Ferguson; Y. Gao; S. González; O. J. Hayes; H. Hu; S. Jin; J. Kile; P. A. McNamara; J. Nielsen; Y. B. Pan; J. H. von Wimmersperg-Toeller; W. Wiedenmann; J. Wu; Sau Lan Wu; X. Wu; G. Zobernig; G. Dissertori

doi:10.1140/epjc/s2003-01286-1

Search for anomalous weak dipole moments of the τ lepton

A. Heister, S. Schael, R. Barate, I. de Bonis, D. Decamp, C. Goy, J. P. Lees, E. Merle, M. N. Minard, B. Pietrzyk, S. Bravo, M. P. Casado, M. Chmeissani, J. M. Crespo, E. Fernandez, M. Fernandez-Bosman, L. Garrido, M. Martinez, A. Pacheco, H. RuizA. Colaleo, D. Creanza, M. de Palma, G. Iaselli, G. Maggi, M. Maggi, S. Nuzzo, A. Ranieri, G. Raso, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, A. Tricomi, G. Zito, X. Huang, J. Lin, Q. Ouyang, T. Wang, Y. Xie, R. Xu, S. Xue, J. Zhang, L. Zhang, W. Zhao, D. Abbaneo, P. Azzurri, O. Buchmüller, M. Cattaneo, F. Cerutti, B. Clerbaux, H. Drevermann, R. W. Forty, M. Frank, F. Gianotti, J. B. Hansen, J. Harvey, D. E. Hutchcroft, P. Janot, B. Jost, M. Kado, P. Mato, A. Moutoussi, F. Ranjard, L. Rolandi, D. Schlatter, O. Schneider, G. Sguazzoni, W. Tejessy, F. Teubert, A. Valassi, I. Videau, J. Ward, F. Badaud, A. Falvard, P. Gay, P. Henrard, J. Jousset, B. Michel, S. Monteil, J. C. Montret, D. Pallin, P. Perret, J. D. Hansen, J. R. Hansen, P. H. Hansen, B. S. Nilsson, A. Kyriakis, C. Markou, E. Simopoulou, A. Vayaki, K. Zachariadou, A. Blondel, G. Bonneaud, J. C. Brient, A. Rougé, M. Rumpf, M. Swynghedauw, M. Verderi, H. Videau, V. Ciulli, E. Focardi, G. Parrini, A. Antonelli, M. Antonelli, G. Bencivenni, F. Bossi, G. Capon, V. Chiarella, P. Laurelli, G. Mannocchi, G. P. Murtas, L. Passalacqua, M. Pepe-Altarelli, J. G. Lynch, P. Negus, V. O'Shea, C. Raine, A. S. Thompson, S. Wasserbaech, R. Cavanaugh, C. Geweniger, P. Hanke, V. Hepp, E. E. Kluge, A. Putzer, H. Stenzel, K. Tittel, M. Wunsch, R. Beuselinck, D. M. Binnie, W. Cameron, P. J. Dornan, M. Girone, N. Marinelli, J. K. Sedgbeer, J. C. Thompson, V. M. Ghete, P. Girtler, E. Kneringer, D. Kuhn, G. Rudolph, E. Bouhova-Thacker, C. K. Bowdery, A. J. Finch, F. Foster, G. Hughes, R. W.L. Jones, M. R. Pearson, N. A. Robertson, K. Jakobs, K. Kleinknecht, B. Renk, H. G. Sander, H. Wachsmuth, C. Zeitnitz, A. Bonissent, P. Coyle, O. Leroy, P. Payre, D. Rousseau, M. Talby, F. Ragusa, A. David, H. Dietl, G. Ganis, K. Hüttmann, G. Lütjens, W. Männer, H. G. Moser, R. Settles, W. Wiedenmann, G. Wolf, J. Boucrot, O. Callot, M. Davier, L. Duflot, J. F. Grivaz, Ph Heusse, A. Jacholkowska, J. Lefrançois, J. J. Veillet, C. Yuan, G. Bagliesi, T. Boccali, L. Foà, A. Giammanco, A. Giassi, F. Ligabue, A. Messineo, F. Palla, G. Sanguinetti, A. Sciabà, R. Tenchini, A. Venturi, P. G. Verdini, G. A. Blair, G. Cowan, M. G. Green, T. Medcalf, A. Misiejuk, J. A. Strong, P. Teixeira-Dias, R. W. Clifft, T. R. Edgecock, P. R. Norton, I. R. Tomalin, B. Bloch-Devaux, P. Colas, E. Lançon, M. C. Lemaire, E. Locci, P. Perez, J. Rander, J. P. Schuller, B. Vallage, N. Konstantinidis, A. M. Litke, G. Taylor, C. N. Booth, S. Cartwright, F. Combley, M. Lehto, L. F. Thompson, A. Böhrer, S. Brandt, C. Grupen, A. Ngac, G. Prange, G. Giannini, J. Rothberg, S. R. Armstrong, K. Berkelman, K. Cranmer, D. P.S. Ferguson, Y. Gao, S. González, O. J. Hayes, H. Hu, S. Jin, J. Kile, P. A. McNamara, J. Nielsen, Y. B. Pan, J. H. von Wimmersperg-Toeller, W. Wiedenmann, J. Wu, Sau Lan Wu, X. Wu, G. Zobernig, G. Dissertori

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

The anomalous weak dipole moments of the τ lepton are measured in a data sample collected by ALEPH from 1990 to 1995 corresponding to an integrated luminosity of 155 pb^-1. Tau leptons produced in the reaction e ⁺e^- → τ⁺τ^- at energies close to the Z mass are studied using their semileptonic decays to π, ρ, a₁ → π2π⁰ or a₁ → 3π. The real and imaginary components of both the anomalous weak magnetic dipole moment and the CP-violating anomalous weak electric dipole moment, Re μ _τ, Im μ_τ, Re d_τ and Im d _τ, are measured simultaneously by means of a likelihood fit built from the full differential cross section. No evidence of new physics is found. The following bounds are obtained (95% CL): |Re μ_τ| < 1.14 × 10^-3, |Im μ_τ| < 2.65 × 10^-3, |Re d_τ| < 0.91 × 10^-3, and |Im d_τ| < 2.01 × 10^-3.

Original language	English
Pages (from-to)	291-304
Number of pages	14
Journal	European Physical Journal C
Volume	30
Issue number	3
DOIs	https://doi.org/10.1140/epjc/s2003-01286-1
State	Published - Oct 2003
Externally published	Yes

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10.1140/epjc/s2003-01286-1

Cite this

Heister, A., Schael, S., Barate, R., de Bonis, I., Decamp, D., Goy, C., Lees, J. P., Merle, E., Minard, M. N., Pietrzyk, B., Bravo, S., Casado, M. P., Chmeissani, M., Crespo, J. M., Fernandez, E., Fernandez-Bosman, M., Garrido, L., Martinez, M., Pacheco, A., ... Dissertori, G. (2003). Search for anomalous weak dipole moments of the τ lepton. European Physical Journal C, 30(3), 291-304. https://doi.org/10.1140/epjc/s2003-01286-1

@article{e534e242eb5a40b4970a084d30c04f3f,

title = "Search for anomalous weak dipole moments of the τ lepton",

abstract = "The anomalous weak dipole moments of the τ lepton are measured in a data sample collected by ALEPH from 1990 to 1995 corresponding to an integrated luminosity of 155 pb-1. Tau leptons produced in the reaction e +e- → τ+τ- at energies close to the Z mass are studied using their semileptonic decays to π, ρ, a1 → π2π0 or a1 → 3π. The real and imaginary components of both the anomalous weak magnetic dipole moment and the CP-violating anomalous weak electric dipole moment, Re μ τ, Im μτ, Re dτ and Im d τ, are measured simultaneously by means of a likelihood fit built from the full differential cross section. No evidence of new physics is found. The following bounds are obtained (95% CL): |Re μτ| < 1.14 × 10-3, |Im μτ| < 2.65 × 10-3, |Re dτ| < 0.91 × 10-3, and |Im dτ| < 2.01 × 10-3.",

author = "A. Heister and S. Schael and R. Barate and {de Bonis}, I. and D. Decamp and C. Goy and Lees, {J. P.} and E. Merle and Minard, {M. N.} and B. Pietrzyk and S. Bravo and Casado, {M. P.} and M. Chmeissani and Crespo, {J. M.} and E. Fernandez and M. Fernandez-Bosman and L. Garrido and M. Martinez and A. Pacheco and H. Ruiz and A. Colaleo and D. Creanza and {de Palma}, M. and G. Iaselli and G. Maggi and M. Maggi and S. Nuzzo and A. Ranieri and G. Raso and F. Ruggieri and G. Selvaggi and L. Silvestris and P. Tempesta and A. Tricomi and G. Zito and X. Huang and J. Lin and Q. Ouyang and T. Wang and Y. Xie and R. Xu and S. Xue and J. Zhang and L. Zhang and W. Zhao and D. Abbaneo and P. Azzurri and O. Buchm{\"u}ller and M. Cattaneo and F. Cerutti and B. Clerbaux and H. Drevermann and Forty, {R. W.} and M. Frank and F. Gianotti and Hansen, {J. B.} and J. Harvey and Hutchcroft, {D. E.} and P. Janot and B. Jost and M. Kado and P. Mato and A. Moutoussi and F. Ranjard and L. Rolandi and D. Schlatter and O. Schneider and G. Sguazzoni and W. Tejessy and F. Teubert and A. Valassi and I. Videau and J. Ward and F. Badaud and A. Falvard and P. Gay and P. Henrard and J. Jousset and B. Michel and S. Monteil and Montret, {J. C.} and D. Pallin and P. Perret and Hansen, {J. D.} and Hansen, {J. R.} and Hansen, {P. H.} and Nilsson, {B. S.} and A. Kyriakis and C. Markou and E. Simopoulou and A. Vayaki and K. Zachariadou and A. Blondel and G. Bonneaud and Brient, {J. C.} and A. Roug{\'e} and M. Rumpf and M. Swynghedauw and M. Verderi and H. Videau and V. Ciulli and E. Focardi and G. Parrini and A. Antonelli and M. Antonelli and G. Bencivenni and F. Bossi and G. Capon and V. Chiarella and P. Laurelli and G. Mannocchi and Murtas, {G. P.} and L. Passalacqua and M. Pepe-Altarelli and Lynch, {J. G.} and P. Negus and V. O'Shea and C. Raine and Thompson, {A. S.} and S. Wasserbaech and R. Cavanaugh and C. Geweniger and P. Hanke and V. Hepp and Kluge, {E. E.} and A. Putzer and H. Stenzel and K. Tittel and M. Wunsch and R. Beuselinck and Binnie, {D. M.} and W. Cameron and Dornan, {P. J.} and M. Girone and N. Marinelli and Sedgbeer, {J. K.} and Thompson, {J. C.} and Ghete, {V. M.} and P. Girtler and E. Kneringer and D. Kuhn and G. Rudolph and E. Bouhova-Thacker and Bowdery, {C. K.} and Finch, {A. J.} and F. Foster and G. Hughes and Jones, {R. W.L.} and Pearson, {M. R.} and Robertson, {N. A.} and K. Jakobs and K. Kleinknecht and B. Renk and Sander, {H. G.} and H. Wachsmuth and C. Zeitnitz and A. Bonissent and P. Coyle and O. Leroy and P. Payre and D. Rousseau and M. Talby and F. Ragusa and A. David and H. Dietl and G. Ganis and K. H{\"u}ttmann and G. L{\"u}tjens and W. M{\"a}nner and Moser, {H. G.} and R. Settles and W. Wiedenmann and G. Wolf and J. Boucrot and O. Callot and M. Davier and L. Duflot and Grivaz, {J. F.} and Ph Heusse and A. Jacholkowska and J. Lefran{\c c}ois and Veillet, {J. J.} and C. Yuan and G. Bagliesi and T. Boccali and L. Fo{\`a} and A. Giammanco and A. Giassi and F. Ligabue and A. Messineo and F. Palla and G. Sanguinetti and A. Sciab{\`a} and R. Tenchini and A. Venturi and Verdini, {P. G.} and Blair, {G. A.} and G. Cowan and Green, {M. G.} and T. Medcalf and A. Misiejuk and Strong, {J. A.} and P. Teixeira-Dias and Clifft, {R. W.} and Edgecock, {T. R.} and Norton, {P. R.} and Tomalin, {I. R.} and B. Bloch-Devaux and P. Colas and E. Lan{\c c}on and Lemaire, {M. C.} and E. Locci and P. Perez and J. Rander and Schuller, {J. P.} and B. Vallage and N. Konstantinidis and Litke, {A. M.} and G. Taylor and Booth, {C. N.} and S. Cartwright and F. Combley and M. Lehto and Thompson, {L. F.} and A. B{\"o}hrer and S. Brandt and C. Grupen and A. Ngac and G. Prange and G. Giannini and J. Rothberg and Armstrong, {S. R.} and K. Berkelman and K. Cranmer and Ferguson, {D. P.S.} and Y. Gao and S. Gonz{\'a}lez and Hayes, {O. J.} and H. Hu and S. Jin and J. Kile and McNamara, {P. A.} and J. Nielsen and Pan, {Y. B.} and {von Wimmersperg-Toeller}, {J. H.} and W. Wiedenmann and J. Wu and Wu, {Sau Lan} and X. Wu and G. Zobernig and G. Dissertori",

year = "2003",

month = oct,

doi = "10.1140/epjc/s2003-01286-1",

language = "English",

volume = "30",

pages = "291--304",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "SpringerOpen",

number = "3",

}

Heister, A, Schael, S, Barate, R, de Bonis, I, Decamp, D, Goy, C, Lees, JP, Merle, E, Minard, MN, Pietrzyk, B, Bravo, S, Casado, MP, Chmeissani, M, Crespo, JM, Fernandez, E, Fernandez-Bosman, M, Garrido, L, Martinez, M, Pacheco, A, Ruiz, H, Colaleo, A, Creanza, D, de Palma, M, Iaselli, G, Maggi, G, Maggi, M, Nuzzo, S, Ranieri, A, Raso, G, Ruggieri, F, Selvaggi, G, Silvestris, L, Tempesta, P, Tricomi, A, Zito, G, Huang, X, Lin, J, Ouyang, Q, Wang, T, Xie, Y, Xu, R, Xue, S, Zhang, J, Zhang, L, Zhao, W, Abbaneo, D, Azzurri, P, Buchmüller, O, Cattaneo, M, Cerutti, F, Clerbaux, B, Drevermann, H, Forty, RW, Frank, M, Gianotti, F, Hansen, JB, Harvey, J, Hutchcroft, DE, Janot, P, Jost, B, Kado, M, Mato, P, Moutoussi, A, Ranjard, F, Rolandi, L, Schlatter, D, Schneider, O, Sguazzoni, G, Tejessy, W, Teubert, F, Valassi, A, Videau, I, Ward, J, Badaud, F, Falvard, A, Gay, P, Henrard, P, Jousset, J, Michel, B, Monteil, S, Montret, JC, Pallin, D, Perret, P, Hansen, JD, Hansen, JR, Hansen, PH, Nilsson, BS, Kyriakis, A, Markou, C, Simopoulou, E, Vayaki, A, Zachariadou, K, Blondel, A, Bonneaud, G, Brient, JC, Rougé, A, Rumpf, M, Swynghedauw, M, Verderi, M, Videau, H, Ciulli, V, Focardi, E, Parrini, G, Antonelli, A, Antonelli, M, Bencivenni, G, Bossi, F, Capon, G, Chiarella, V, Laurelli, P, Mannocchi, G, Murtas, GP, Passalacqua, L, Pepe-Altarelli, M, Lynch, JG, Negus, P, O'Shea, V, Raine, C, Thompson, AS, Wasserbaech, S, Cavanaugh, R, Geweniger, C, Hanke, P, Hepp, V, Kluge, EE, Putzer, A, Stenzel, H, Tittel, K, Wunsch, M, Beuselinck, R, Binnie, DM, Cameron, W, Dornan, PJ, Girone, M, Marinelli, N, Sedgbeer, JK, Thompson, JC, Ghete, VM, Girtler, P, Kneringer, E, Kuhn, D, Rudolph, G, Bouhova-Thacker, E, Bowdery, CK, Finch, AJ, Foster, F, Hughes, G, Jones, RWL, Pearson, MR, Robertson, NA, Jakobs, K, Kleinknecht, K, Renk, B, Sander, HG, Wachsmuth, H, Zeitnitz, C, Bonissent, A, Coyle, P, Leroy, O, Payre, P, Rousseau, D, Talby, M, Ragusa, F, David, A, Dietl, H, Ganis, G, Hüttmann, K, Lütjens, G, Männer, W, Moser, HG, Settles, R, Wiedenmann, W, Wolf, G, Boucrot, J, Callot, O, Davier, M, Duflot, L, Grivaz, JF, Heusse, P, Jacholkowska, A, Lefrançois, J, Veillet, JJ, Yuan, C, Bagliesi, G, Boccali, T, Foà, L, Giammanco, A, Giassi, A, Ligabue, F, Messineo, A, Palla, F, Sanguinetti, G, Sciabà, A, Tenchini, R, Venturi, A, Verdini, PG, Blair, GA, Cowan, G, Green, MG, Medcalf, T, Misiejuk, A, Strong, JA, Teixeira-Dias, P, Clifft, RW, Edgecock, TR, Norton, PR, Tomalin, IR, Bloch-Devaux, B, Colas, P, Lançon, E, Lemaire, MC, Locci, E, Perez, P, Rander, J, Schuller, JP, Vallage, B, Konstantinidis, N, Litke, AM, Taylor, G, Booth, CN, Cartwright, S, Combley, F, Lehto, M, Thompson, LF, Böhrer, A, Brandt, S, Grupen, C, Ngac, A, Prange, G, Giannini, G, Rothberg, J, Armstrong, SR, Berkelman, K, Cranmer, K, Ferguson, DPS, Gao, Y, González, S, Hayes, OJ, Hu, H, Jin, S, Kile, J, McNamara, PA, Nielsen, J, Pan, YB, von Wimmersperg-Toeller, JH, Wiedenmann, W, Wu, J, Wu, SL, Wu, X, Zobernig, G & Dissertori, G 2003, 'Search for anomalous weak dipole moments of the τ lepton', European Physical Journal C, vol. 30, no. 3, pp. 291-304. https://doi.org/10.1140/epjc/s2003-01286-1

TY - JOUR

T1 - Search for anomalous weak dipole moments of the τ lepton

AU - Heister, A.

AU - Schael, S.

AU - Barate, R.

AU - de Bonis, I.

AU - Decamp, D.

AU - Goy, C.

AU - Lees, J. P.

AU - Merle, E.

AU - Minard, M. N.

AU - Pietrzyk, B.

AU - Bravo, S.

AU - Casado, M. P.

AU - Chmeissani, M.

AU - Crespo, J. M.

AU - Fernandez, E.

AU - Fernandez-Bosman, M.

AU - Garrido, L.

AU - Martinez, M.

AU - Pacheco, A.

AU - Ruiz, H.

AU - Colaleo, A.

AU - Creanza, D.

AU - de Palma, M.

AU - Iaselli, G.

AU - Maggi, G.

AU - Maggi, M.

AU - Nuzzo, S.

AU - Ranieri, A.

AU - Raso, G.

AU - Ruggieri, F.

AU - Selvaggi, G.

AU - Silvestris, L.

AU - Tempesta, P.

AU - Tricomi, A.

AU - Zito, G.

AU - Huang, X.

AU - Lin, J.

AU - Ouyang, Q.

AU - Wang, T.

AU - Xie, Y.

AU - Xu, R.

AU - Xue, S.

AU - Zhang, J.

AU - Zhang, L.

AU - Zhao, W.

AU - Abbaneo, D.

AU - Azzurri, P.

AU - Buchmüller, O.

AU - Cattaneo, M.

AU - Cerutti, F.

AU - Clerbaux, B.

AU - Drevermann, H.

AU - Forty, R. W.

AU - Frank, M.

AU - Gianotti, F.

AU - Hansen, J. B.

AU - Harvey, J.

AU - Hutchcroft, D. E.

AU - Janot, P.

AU - Jost, B.

AU - Kado, M.

AU - Mato, P.

AU - Moutoussi, A.

AU - Ranjard, F.

AU - Rolandi, L.

AU - Schlatter, D.

AU - Schneider, O.

AU - Sguazzoni, G.

AU - Tejessy, W.

AU - Teubert, F.

AU - Valassi, A.

AU - Videau, I.

AU - Ward, J.

AU - Badaud, F.

AU - Falvard, A.

AU - Gay, P.

AU - Henrard, P.

AU - Jousset, J.

AU - Michel, B.

AU - Monteil, S.

AU - Montret, J. C.

AU - Pallin, D.

AU - Perret, P.

AU - Hansen, J. D.

AU - Hansen, J. R.

AU - Hansen, P. H.

AU - Nilsson, B. S.

AU - Kyriakis, A.

AU - Markou, C.

AU - Simopoulou, E.

AU - Vayaki, A.

AU - Zachariadou, K.

AU - Blondel, A.

AU - Bonneaud, G.

AU - Brient, J. C.

AU - Rougé, A.

AU - Rumpf, M.

AU - Swynghedauw, M.

AU - Verderi, M.

AU - Videau, H.

AU - Ciulli, V.

AU - Focardi, E.

AU - Parrini, G.

AU - Antonelli, A.

AU - Antonelli, M.

AU - Bencivenni, G.

AU - Bossi, F.

AU - Capon, G.

AU - Chiarella, V.

AU - Laurelli, P.

AU - Mannocchi, G.

AU - Murtas, G. P.

AU - Passalacqua, L.

AU - Pepe-Altarelli, M.

AU - Lynch, J. G.

AU - Negus, P.

AU - O'Shea, V.

AU - Raine, C.

AU - Thompson, A. S.

AU - Wasserbaech, S.

AU - Cavanaugh, R.

AU - Geweniger, C.

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PY - 2003/10

Y1 - 2003/10

N2 - The anomalous weak dipole moments of the τ lepton are measured in a data sample collected by ALEPH from 1990 to 1995 corresponding to an integrated luminosity of 155 pb-1. Tau leptons produced in the reaction e +e- → τ+τ- at energies close to the Z mass are studied using their semileptonic decays to π, ρ, a1 → π2π0 or a1 → 3π. The real and imaginary components of both the anomalous weak magnetic dipole moment and the CP-violating anomalous weak electric dipole moment, Re μ τ, Im μτ, Re dτ and Im d τ, are measured simultaneously by means of a likelihood fit built from the full differential cross section. No evidence of new physics is found. The following bounds are obtained (95% CL): |Re μτ| < 1.14 × 10-3, |Im μτ| < 2.65 × 10-3, |Re dτ| < 0.91 × 10-3, and |Im dτ| < 2.01 × 10-3.

AB - The anomalous weak dipole moments of the τ lepton are measured in a data sample collected by ALEPH from 1990 to 1995 corresponding to an integrated luminosity of 155 pb-1. Tau leptons produced in the reaction e +e- → τ+τ- at energies close to the Z mass are studied using their semileptonic decays to π, ρ, a1 → π2π0 or a1 → 3π. The real and imaginary components of both the anomalous weak magnetic dipole moment and the CP-violating anomalous weak electric dipole moment, Re μ τ, Im μτ, Re dτ and Im d τ, are measured simultaneously by means of a likelihood fit built from the full differential cross section. No evidence of new physics is found. The following bounds are obtained (95% CL): |Re μτ| < 1.14 × 10-3, |Im μτ| < 2.65 × 10-3, |Re dτ| < 0.91 × 10-3, and |Im dτ| < 2.01 × 10-3.

UR - http://www.scopus.com/inward/record.url?scp=2442488875&partnerID=8YFLogxK

U2 - 10.1140/epjc/s2003-01286-1

DO - 10.1140/epjc/s2003-01286-1

M3 - Article

AN - SCOPUS:2442488875

SN - 1434-6044

VL - 30

SP - 291

EP - 304

JO - European Physical Journal C

JF - European Physical Journal C

IS - 3

ER -

Search for anomalous weak dipole moments of the τ lepton

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