Measurement of the τ lepton lifetime with the three-dimensional impact parameter method

R. Barate; D. Buskulic; D. Decamp; P. Ghez; C. Goy; J. P. Lees; A. Lucotte; M. N. Minard; J. Y. Nief; B. Pietrzyk; M. P. Casado; M. Chmeissani; P. Comas; J. M. Crespo; M. Delfino; E. Fernandez; M. Fernandez-Bosman; Ll Garrido; A. Juste; M. Martinez; R. Miquel; Ll M. Mir; S. Orteu; C. Padilla; I. C. Park; A. Pascual; J. A. Perlas; I. Riu; F. Sanchez; F. Teubert; A. Colaleo; D. Creanza; M. De Palma; G. Gelao; G. Iaselli; G. Maggi; M. Maggi; N. Marinelli; 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; R. Alemany; U. Becker; A. O. Bazarko; P. Bright-Thomas; M. Cattaneo; F. Cerutti; H. Drevermann; R. W. Forty; M. Frank; R. Hagelberg; J. Harvey; P. Janot; B. Jost; E. Kneringer; J. Knobloch; I. Lehraus; G. Lutters; P. Mato; A. Minten; L. Moneta; A. Pacheco; J. F. Pusztaszeri; F. Ranjard; P. Rensing; G. Rizzo; L. Rolandi; D. Schlatter; M. Schmitt; O. Schneider; W. Tejessy; I. R. Tomalin; H. Wachsmuth; A. Wagner; Z. Ajaltouni; A. Barrés; C. Boyer; A. Falvard; C. Ferdi; P. Gay; C. Guicheney; P. Henrard; J. Jousset

Measurement of the τ lepton lifetime with the three-dimensional impact parameter method

R. Barate, D. Buskulic, D. Decamp, P. Ghez, C. Goy, J. P. Lees, A. Lucotte, M. N. Minard, J. Y. Nief, B. Pietrzyk, M. P. Casado, M. Chmeissani, P. Comas, J. M. Crespo, M. Delfino, E. Fernandez, M. Fernandez-Bosman, Ll Garrido, A. Juste, M. MartinezR. Miquel, Ll M. Mir, S. Orteu, C. Padilla, I. C. Park, A. Pascual, J. A. Perlas, I. Riu, F. Sanchez, F. Teubert, A. Colaleo, D. Creanza, M. De Palma, G. Gelao, G. Iaselli, G. Maggi, M. Maggi, N. Marinelli, 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, R. Alemany, U. Becker, A. O. Bazarko, P. Bright-Thomas, M. Cattaneo, F. Cerutti, H. Drevermann, R. W. Forty, M. Frank, R. Hagelberg, J. Harvey, P. Janot, B. Jost, E. Kneringer, J. Knobloch, I. Lehraus, G. Lutters, P. Mato, A. Minten, L. Moneta, A. Pacheco, J. F. Pusztaszeri, F. Ranjard, P. Rensing, G. Rizzo, L. Rolandi, D. Schlatter, M. Schmitt, O. Schneider, W. Tejessy, I. R. Tomalin, H. Wachsmuth, A. Wagner, Z. Ajaltouni, A. Barrés, C. Boyer, A. Falvard, C. Ferdi, P. Gay, C. Guicheney, P. Henrard, J. Jousset

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Resum

A new method is presented for the measurement of the mean τ lepton lifetime using events in which τ's are pair-produced and both τ's decay to hadrons and ντ. Based on the correlation between the two τ's produced at a symmetric e+e- collider, the 3DIP method relies on the three-dimensional information from a double-sided vertex detector and on kinematic constraints for the precise measurement of the τ decay angles. Using the data collected from 1992 to 1994 with the ALEPH detector at LEP, a τ lifetime of 288.0 ± 3.1 ± 1.3 fs is obtained from the sample in which both τ's decay to one charged track, and 292.8 ± 5.6 ± 3.0 fs from the sample in which one τ decays to one prong and the other to three prongs. The results show small statistical correlations with those derived from other methods. When combined with the previously published ALEPH measurements, the resulting τ lifetime is 291.2 ± 2.0 ± 1.2 fs. © Springer-Verlag 1997.

Idioma original	Anglès
Pàgines (de-a)	387-398
Revista	Zeitschrift fur Physik C-Particles and Fields
Volum	74
Número	3
Estat de la publicació	Publicada - 1 de gen. 1997

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Barate, R., Buskulic, D., Decamp, D., Ghez, P., Goy, C., Lees, J. P., Lucotte, A., Minard, M. N., Nief, J. Y., Pietrzyk, B., Casado, M. P., Chmeissani, M., Comas, P., Crespo, J. M., Delfino, M., Fernandez, E., Fernandez-Bosman, M., Garrido, L., Juste, A., ... Jousset, J. (1997). Measurement of the τ lepton lifetime with the three-dimensional impact parameter method. Zeitschrift fur Physik C-Particles and Fields, 74(3), 387-398.

@article{f900579154634a57b5db2a9408e42440,

title = "Measurement of the τ lepton lifetime with the three-dimensional impact parameter method",

abstract = "A new method is presented for the measurement of the mean τ lepton lifetime using events in which τ's are pair-produced and both τ's decay to hadrons and ντ. Based on the correlation between the two τ's produced at a symmetric e+e- collider, the 3DIP method relies on the three-dimensional information from a double-sided vertex detector and on kinematic constraints for the precise measurement of the τ decay angles. Using the data collected from 1992 to 1994 with the ALEPH detector at LEP, a τ lifetime of 288.0 ± 3.1 ± 1.3 fs is obtained from the sample in which both τ's decay to one charged track, and 292.8 ± 5.6 ± 3.0 fs from the sample in which one τ decays to one prong and the other to three prongs. The results show small statistical correlations with those derived from other methods. When combined with the previously published ALEPH measurements, the resulting τ lifetime is 291.2 ± 2.0 ± 1.2 fs. {\textcopyright} Springer-Verlag 1997.",

author = "R. Barate and D. Buskulic and D. Decamp and P. Ghez and C. Goy and Lees, {J. P.} and A. Lucotte and Minard, {M. N.} and Nief, {J. Y.} and B. Pietrzyk and Casado, {M. P.} and M. Chmeissani and P. Comas and Crespo, {J. M.} and M. Delfino and E. Fernandez and M. Fernandez-Bosman and Ll Garrido and A. Juste and M. Martinez and R. Miquel and Mir, {Ll M.} and S. Orteu and C. Padilla and Park, {I. C.} and A. Pascual and Perlas, {J. A.} and I. Riu and F. Sanchez and F. Teubert and A. Colaleo and D. Creanza and {De Palma}, M. and G. Gelao and G. Iaselli and G. Maggi and M. Maggi and N. Marinelli 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 R. Alemany and U. Becker and Bazarko, {A. O.} and P. Bright-Thomas and M. Cattaneo and F. Cerutti and H. Drevermann and Forty, {R. W.} and M. Frank and R. Hagelberg and J. Harvey and P. Janot and B. Jost and E. Kneringer and J. Knobloch and I. Lehraus and G. Lutters and P. Mato and A. Minten and L. Moneta and A. Pacheco and Pusztaszeri, {J. F.} and F. Ranjard and P. Rensing and G. Rizzo and L. Rolandi and D. Schlatter and M. Schmitt and O. Schneider and W. Tejessy and Tomalin, {I. R.} and H. Wachsmuth and A. Wagner and Z. Ajaltouni and A. Barr{\'e}s and C. Boyer and A. Falvard and C. Ferdi and P. Gay and C. Guicheney and P. Henrard and J. Jousset",

year = "1997",

month = jan,

day = "1",

language = "English",

volume = "74",

pages = "387--398",

number = "3",

}

Barate, R, Buskulic, D, Decamp, D, Ghez, P, Goy, C, Lees, JP, Lucotte, A, Minard, MN, Nief, JY, Pietrzyk, B, Casado, MP, Chmeissani, M, Comas, P, Crespo, JM , Delfino, M, Fernandez, E, Fernandez-Bosman, M, Garrido, L, Juste, A, Martinez, M, Miquel, R, Mir, LM, Orteu, S, Padilla, C, Park, IC, Pascual, A, Perlas, JA, Riu, I, Sanchez, F, Teubert, F, Colaleo, A, Creanza, D, De Palma, M, Gelao, G, Iaselli, G, Maggi, G, Maggi, M, Marinelli, N, 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, Alemany, R, Becker, U, Bazarko, AO, Bright-Thomas, P, Cattaneo, M, Cerutti, F, Drevermann, H, Forty, RW, Frank, M, Hagelberg, R, Harvey, J, Janot, P, Jost, B, Kneringer, E, Knobloch, J, Lehraus, I, Lutters, G, Mato, P, Minten, A, Moneta, L, Pacheco, A, Pusztaszeri, JF, Ranjard, F, Rensing, P, Rizzo, G, Rolandi, L, Schlatter, D, Schmitt, M, Schneider, O, Tejessy, W, Tomalin, IR, Wachsmuth, H, Wagner, A, Ajaltouni, Z, Barrés, A, Boyer, C, Falvard, A, Ferdi, C, Gay, P, Guicheney, C, Henrard, P & Jousset, J 1997, 'Measurement of the τ lepton lifetime with the three-dimensional impact parameter method', Zeitschrift fur Physik C-Particles and Fields, vol. 74, núm. 3, pàg. 387-398.

TY - JOUR

T1 - Measurement of the τ lepton lifetime with the three-dimensional impact parameter method

AU - Barate, R.

AU - Buskulic, D.

AU - Decamp, D.

AU - Ghez, P.

AU - Goy, C.

AU - Lees, J. P.

AU - Lucotte, A.

AU - Minard, M. N.

AU - Nief, J. Y.

AU - Pietrzyk, B.

AU - Casado, M. P.

AU - Chmeissani, M.

AU - Comas, P.

AU - Crespo, J. M.

AU - Delfino, M.

AU - Fernandez, E.

AU - Fernandez-Bosman, M.

AU - Garrido, Ll

AU - Juste, A.

AU - Martinez, M.

AU - Miquel, R.

AU - Mir, Ll M.

AU - Orteu, S.

AU - Padilla, C.

AU - Park, I. C.

AU - Pascual, A.

AU - Perlas, J. A.

AU - Riu, I.

AU - Sanchez, F.

AU - Teubert, F.

AU - Colaleo, A.

AU - Creanza, D.

AU - De Palma, M.

AU - Gelao, G.

AU - Iaselli, G.

AU - Maggi, G.

AU - Maggi, M.

AU - Marinelli, N.

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 - Alemany, R.

AU - Becker, U.

AU - Bazarko, A. O.

AU - Bright-Thomas, P.

AU - Cattaneo, M.

AU - Cerutti, F.

AU - Drevermann, H.

AU - Forty, R. W.

AU - Frank, M.

AU - Hagelberg, R.

AU - Harvey, J.

AU - Janot, P.

AU - Jost, B.

AU - Kneringer, E.

AU - Knobloch, J.

AU - Lehraus, I.

AU - Lutters, G.

AU - Mato, P.

AU - Minten, A.

AU - Moneta, L.

AU - Pacheco, A.

AU - Pusztaszeri, J. F.

AU - Ranjard, F.

AU - Rensing, P.

AU - Rizzo, G.

AU - Rolandi, L.

AU - Schlatter, D.

AU - Schmitt, M.

AU - Schneider, O.

AU - Tejessy, W.

AU - Tomalin, I. R.

AU - Wachsmuth, H.

AU - Wagner, A.

AU - Ajaltouni, Z.

AU - Barrés, A.

AU - Boyer, C.

AU - Falvard, A.

AU - Ferdi, C.

AU - Gay, P.

AU - Guicheney, C.

AU - Henrard, P.

AU - Jousset, J.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - A new method is presented for the measurement of the mean τ lepton lifetime using events in which τ's are pair-produced and both τ's decay to hadrons and ντ. Based on the correlation between the two τ's produced at a symmetric e+e- collider, the 3DIP method relies on the three-dimensional information from a double-sided vertex detector and on kinematic constraints for the precise measurement of the τ decay angles. Using the data collected from 1992 to 1994 with the ALEPH detector at LEP, a τ lifetime of 288.0 ± 3.1 ± 1.3 fs is obtained from the sample in which both τ's decay to one charged track, and 292.8 ± 5.6 ± 3.0 fs from the sample in which one τ decays to one prong and the other to three prongs. The results show small statistical correlations with those derived from other methods. When combined with the previously published ALEPH measurements, the resulting τ lifetime is 291.2 ± 2.0 ± 1.2 fs. © Springer-Verlag 1997.

AB - A new method is presented for the measurement of the mean τ lepton lifetime using events in which τ's are pair-produced and both τ's decay to hadrons and ντ. Based on the correlation between the two τ's produced at a symmetric e+e- collider, the 3DIP method relies on the three-dimensional information from a double-sided vertex detector and on kinematic constraints for the precise measurement of the τ decay angles. Using the data collected from 1992 to 1994 with the ALEPH detector at LEP, a τ lifetime of 288.0 ± 3.1 ± 1.3 fs is obtained from the sample in which both τ's decay to one charged track, and 292.8 ± 5.6 ± 3.0 fs from the sample in which one τ decays to one prong and the other to three prongs. The results show small statistical correlations with those derived from other methods. When combined with the previously published ALEPH measurements, the resulting τ lifetime is 291.2 ± 2.0 ± 1.2 fs. © Springer-Verlag 1997.

M3 - Article

SN - 0170-9739

VL - 74

SP - 387

EP - 398

JO - Zeitschrift fur Physik C-Particles and Fields

JF - Zeitschrift fur Physik C-Particles and Fields

IS - 3

ER -

Measurement of the τ lepton lifetime with the three-dimensional impact parameter method

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