We analyse e(+)e(-) --> tau tau gamma events using 100 pb(-1) of data collected by the L3 experiment during the 1991-1995 LEP runs at the Z pole. From the energy of the photons and their isolation from the tau decay products, we determine the anomalous magnetic and electric dipole moments of the tau to be, respectively: a(tau) = 0.004 +/- 0.027 +/- 0.023; d(tau) = (0.0 +/- 1.5 +/- 1.3) x 10(16) e.cm. This is a direct measurement of these tau form factors at q(2) = 0. (C) 1998 Elsevier Science B.V. All rights reserved.

Measurement of the anomalous magnetic and electric dipole moments of the tau lepton / Acciarri, M., Adriani, O., AGUILAR BENITEZ, M., Ahlen, S., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, A., Alviggi, M.g., Ambrosi, G., Anderhub, H., Andreev, V.p., Angelescu, T., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Baksay, L., Ball, R.c., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 434:(1998), pp. 169-179. [10.1016/S0370-2693(98)00736-9]

Measurement of the anomalous magnetic and electric dipole moments of the tau lepton

BAGNAIA, Paolo;FERRONI, Fernando;GENTILE, Simonetta;GIAGU, Stefano;LUCI, Claudio;ORGANTINI G;
1998

Abstract

We analyse e(+)e(-) --> tau tau gamma events using 100 pb(-1) of data collected by the L3 experiment during the 1991-1995 LEP runs at the Z pole. From the energy of the photons and their isolation from the tau decay products, we determine the anomalous magnetic and electric dipole moments of the tau to be, respectively: a(tau) = 0.004 +/- 0.027 +/- 0.023; d(tau) = (0.0 +/- 1.5 +/- 1.3) x 10(16) e.cm. This is a direct measurement of these tau form factors at q(2) = 0. (C) 1998 Elsevier Science B.V. All rights reserved.
1998
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the anomalous magnetic and electric dipole moments of the tau lepton / Acciarri, M., Adriani, O., AGUILAR BENITEZ, M., Ahlen, S., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, A., Alviggi, M.g., Ambrosi, G., Anderhub, H., Andreev, V.p., Angelescu, T., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Baksay, L., Ball, R.c., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 434:(1998), pp. 169-179. [10.1016/S0370-2693(98)00736-9]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/241677
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