Measurement of the tau polarisation at LEP

A. Heister; S. Schael; R. Barate; I. De Bonis; D. Decamp; P. Ghez; C. Goy; J. P. Lees; E. Merle; M. N. Minard; B. Pietrzyk; R. Alemany; S. Bravo; M. P. Casado; M. Chmeissani; J. M. Crespo; E. Fernandez; M. Fernandez-Bosman; L. Garrido; E. Graugés; M. Martínez; G. Merino; R. Miquel; L. M. Mir; 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; G. Boix; O. Buchmuller; M. Cattaneo; F. Cerutti; B. Clerbaux; G. Dissertori; H. Drevermann; R. W. Forty; M. Frank; T. C. Greening; J. B. Hansen; J. Harvey; P. Janot; B. Jost; M. Kado; P. Mato; A. Moutoussi; F. Ranjard; L. Rolandi; D. Schlatter; M. Schmitt; O. Schneider; P. Spagnolo; W. Tejessy; F. Teubert; E. Tournefier; J. Ward; A. E. Wright; Z. Ajaltouni; F. Badaud; A. Falvard; P. Gay; P. Henrard; J. Jousset; B. Michel; S. Monteil; J. C. Montret; D. Pallin; P. Perret; F. Podlyski; J. D. Hansen; J. R. Hansen; P. H. Hansen; B. S. Nilsson; A. Wäänänen; G. Daskalakis; A. Kyriakis

Measurement of the tau polarisation at LEP

A. Heister, S. Schael, R. Barate, I. De Bonis, D. Decamp, P. Ghez, C. Goy, J. P. Lees, E. Merle, M. N. Minard, B. Pietrzyk, R. Alemany, S. Bravo, M. P. Casado, M. Chmeissani, J. M. Crespo, E. Fernandez, M. Fernandez-Bosman, L. Garrido, E. GraugésM. Martínez, G. Merino, R. Miquel, L. M. Mir, 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, G. Boix, O. Buchmuller, M. Cattaneo, F. Cerutti, B. Clerbaux, G. Dissertori, H. Drevermann, R. W. Forty, M. Frank, T. C. Greening, J. B. Hansen, J. Harvey, P. Janot, B. Jost, M. Kado, P. Mato, A. Moutoussi, F. Ranjard, L. Rolandi, D. Schlatter, M. Schmitt, O. Schneider, P. Spagnolo, W. Tejessy, F. Teubert, E. Tournefier, J. Ward, A. E. Wright, Z. Ajaltouni, F. Badaud, A. Falvard, P. Gay, P. Henrard, J. Jousset, B. Michel, S. Monteil, J. C. Montret, D. Pallin, P. Perret, F. Podlyski, J. D. Hansen, J. R. Hansen, P. H. Hansen, B. S. Nilsson, A. Wäänänen, G. Daskalakis, A. Kyriakis

Department of Physics

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

37 Citations (Scopus)

Abstract

The polarisation of τ's produced in Z decay is measured using 160 pb-1 of data accumulated at LEP by the ALEPH detector between 1990 and 1995. The variation of the polarisation with polar angle yields the two parameters Ae = 0.1504 ± 0.0068 and Aτ = 0.1451 ± 0.0059 which are consistent with the hypothesis of e-τ universality. Assuming universality, the value Ae-τ = 0.1474 ± 0.0045 is obtained from which the effective weak mixing angle sin2 θeffW = 0.23147 ± 0.00057 is derived.

Original language	English
Pages (from-to)	401-430
Journal	European Physical Journal C
Volume	20
Issue number	3
Publication status	Published - 1 Jan 2001

Cite this

@article{67e76254d11a4281b09b82fbc24534a9,

title = "Measurement of the tau polarisation at LEP",

abstract = "The polarisation of τ's produced in Z decay is measured using 160 pb-1 of data accumulated at LEP by the ALEPH detector between 1990 and 1995. The variation of the polarisation with polar angle yields the two parameters Ae = 0.1504 ± 0.0068 and Aτ = 0.1451 ± 0.0059 which are consistent with the hypothesis of e-τ universality. Assuming universality, the value Ae-τ = 0.1474 ± 0.0045 is obtained from which the effective weak mixing angle sin2 θeffW = 0.23147 ± 0.00057 is derived.",

author = "A. Heister and S. Schael and R. Barate and {De Bonis}, I. and D. Decamp and P. Ghez and C. Goy and Lees, {J. P.} and E. Merle and Minard, {M. N.} and B. Pietrzyk and R. Alemany 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 E. Graug{\'e}s and M. Mart{\'i}nez and G. Merino and R. Miquel and Mir, {L. M.} 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 G. Boix and O. Buchmuller and M. Cattaneo and F. Cerutti and B. Clerbaux and G. Dissertori and H. Drevermann and Forty, {R. W.} and M. Frank and Greening, {T. C.} and Hansen, {J. B.} and J. Harvey 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 M. Schmitt and O. Schneider and P. Spagnolo and W. Tejessy and F. Teubert and E. Tournefier and J. Ward and Wright, {A. E.} and Z. Ajaltouni 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 F. Podlyski and Hansen, {J. D.} and Hansen, {J. R.} and Hansen, {P. H.} and Nilsson, {B. S.} and A. W{\"a}{\"a}n{\"a}nen and G. Daskalakis and A. Kyriakis",

year = "2001",

month = jan,

day = "1",

language = "English",

volume = "20",

pages = "401--430",

number = "3",

}

Heister, A, Schael, S, Barate, R, De Bonis, I, Decamp, D, Ghez, P, Goy, C, Lees, JP, Merle, E, Minard, MN, Pietrzyk, B, Alemany, R, Bravo, S, Casado, MP, Chmeissani, M, Crespo, JM, Fernandez, E, Fernandez-Bosman, M, Garrido, L, Graugés, E, Martínez, M, Merino, G, Miquel, R, Mir, LM, 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, Boix, G, Buchmuller, O, Cattaneo, M, Cerutti, F, Clerbaux, B, Dissertori, G, Drevermann, H, Forty, RW, Frank, M, Greening, TC, Hansen, JB, Harvey, J, Janot, P, Jost, B, Kado, M, Mato, P, Moutoussi, A, Ranjard, F, Rolandi, L, Schlatter, D, Schmitt, M, Schneider, O, Spagnolo, P, Tejessy, W, Teubert, F, Tournefier, E, Ward, J, Wright, AE, Ajaltouni, Z, Badaud, F, Falvard, A, Gay, P, Henrard, P, Jousset, J, Michel, B, Monteil, S, Montret, JC, Pallin, D, Perret, P, Podlyski, F, Hansen, JD, Hansen, JR, Hansen, PH, Nilsson, BS, Wäänänen, A, Daskalakis, G & Kyriakis, A 2001, 'Measurement of the tau polarisation at LEP', European Physical Journal C, vol. 20, no. 3, pp. 401-430.

TY - JOUR

T1 - Measurement of the tau polarisation at LEP

AU - Heister, A.

AU - Schael, S.

AU - Barate, R.

AU - De Bonis, I.

AU - Decamp, D.

AU - Ghez, P.

AU - Goy, C.

AU - Lees, J. P.

AU - Merle, E.

AU - Minard, M. N.

AU - Pietrzyk, B.

AU - Alemany, R.

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 - Graugés, E.

AU - Martínez, M.

AU - Merino, G.

AU - Miquel, R.

AU - Mir, L. 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 - Boix, G.

AU - Buchmuller, O.

AU - Cattaneo, M.

AU - Cerutti, F.

AU - Clerbaux, B.

AU - Dissertori, G.

AU - Drevermann, H.

AU - Forty, R. W.

AU - Frank, M.

AU - Greening, T. C.

AU - Hansen, J. B.

AU - Harvey, J.

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 - Schmitt, M.

AU - Schneider, O.

AU - Spagnolo, P.

AU - Tejessy, W.

AU - Teubert, F.

AU - Tournefier, E.

AU - Ward, J.

AU - Wright, A. E.

AU - Ajaltouni, Z.

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 - Podlyski, F.

AU - Hansen, J. D.

AU - Hansen, J. R.

AU - Hansen, P. H.

AU - Nilsson, B. S.

AU - Wäänänen, A.

AU - Daskalakis, G.

AU - Kyriakis, A.

PY - 2001/1/1

Y1 - 2001/1/1

N2 - The polarisation of τ's produced in Z decay is measured using 160 pb-1 of data accumulated at LEP by the ALEPH detector between 1990 and 1995. The variation of the polarisation with polar angle yields the two parameters Ae = 0.1504 ± 0.0068 and Aτ = 0.1451 ± 0.0059 which are consistent with the hypothesis of e-τ universality. Assuming universality, the value Ae-τ = 0.1474 ± 0.0045 is obtained from which the effective weak mixing angle sin2 θeffW = 0.23147 ± 0.00057 is derived.

AB - The polarisation of τ's produced in Z decay is measured using 160 pb-1 of data accumulated at LEP by the ALEPH detector between 1990 and 1995. The variation of the polarisation with polar angle yields the two parameters Ae = 0.1504 ± 0.0068 and Aτ = 0.1451 ± 0.0059 which are consistent with the hypothesis of e-τ universality. Assuming universality, the value Ae-τ = 0.1474 ± 0.0045 is obtained from which the effective weak mixing angle sin2 θeffW = 0.23147 ± 0.00057 is derived.

M3 - Article

VL - 20

SP - 401

EP - 430

IS - 3

ER -

Measurement of the tau polarisation at LEP

Abstract

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