Using the 18.8 pb-1 of data accumulated at LEP in 1990 and 1991 with the ALEPH detector, a direct test of neutral current CP-invariance is performed by a search for CP-odd correlations in Z decays to tau pairs where both tau decay modes are identified. No evidence for CP-violation is observed. The weak dipole moment of the tau has been measured to be d(tau)(m(Z)) = (1.3 +/- 1.4 +/- 0.1) x 10(-17)e.cm which results in an upper timit on the weak dipole moment of \d(tau)(m(Z))\ less-than-or-equal-to 3.7 x 10(-17)e.cm with 95% confidence level.

Search for CP violation in ZmF ττ / Buskulic, D., Decamp, D., Goy, C., Lees, J.-P., Minard, M.-N., Mours, B., Alemany, R., Ariztizabal, F., Comas, P., Crespo, J.M., Delfino, M., Fernandez, E., Gaitan, V., Garrido, Ll., Mattison, T., Pacheco, A., Pascual, A., Creanza, D., de Palma, M., Farilla, A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 297:3-4(1992), pp. 459-468. [10.1016/0370-2693(92)91285-H]

Search for CP violation in ZmF ττ

Creanza, D.;Iaselli, G.;Maggi, G.;
1992

Abstract

Using the 18.8 pb-1 of data accumulated at LEP in 1990 and 1991 with the ALEPH detector, a direct test of neutral current CP-invariance is performed by a search for CP-odd correlations in Z decays to tau pairs where both tau decay modes are identified. No evidence for CP-violation is observed. The weak dipole moment of the tau has been measured to be d(tau)(m(Z)) = (1.3 +/- 1.4 +/- 0.1) x 10(-17)e.cm which results in an upper timit on the weak dipole moment of \d(tau)(m(Z))\ less-than-or-equal-to 3.7 x 10(-17)e.cm with 95% confidence level.
1992
Search for CP violation in ZmF ττ / Buskulic, D., Decamp, D., Goy, C., Lees, J.-P., Minard, M.-N., Mours, B., Alemany, R., Ariztizabal, F., Comas, P., Crespo, J.M., Delfino, M., Fernandez, E., Gaitan, V., Garrido, Ll., Mattison, T., Pacheco, A., Pascual, A., Creanza, D., de Palma, M., Farilla, A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 297:3-4(1992), pp. 459-468. [10.1016/0370-2693(92)91285-H]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/1446
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