Using a sample of e(+)e(-) annihilation events collected with the L3 detector at the Z resonance corresponding to an integrated luminosity of 137 pb(-1), we have searched for anomalous production of gamma X final states where X represents stable, weakly interacting particles and the photon energy is greater than 15 GeV. The sample of events found is consistent with Standard Model expectations. Upper limits are set on Z gamma couplings, the tau neutrino magnetic moment, and the branching ratio for Z --> gamma X. (C) 1997 Elsevier Science B.V.

Search for new physics in energetic single photon production in e(+)e(-) annihilation at the Z resonance / M. Acciarri, O. Adriani, M. AguilarBenitez, S. Ahlen, J. Alcaraz, G. Alemanni, J. Allaby, A. Aloisio, G. Alverson, M. G. Alviggi, G. Ambrosi, H. Anderhub, V. P. Andreev, T. Angelescu, F. Anselmo, A. Arefiev, T. Azemoon, T. Aziz, P. Bagnaia, L. Baksay, et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 412:(1997), pp. 201-209. [10.1016/S0370-2693(97)01003-4]

Search for new physics in energetic single photon production in e(+)e(-) annihilation at the Z resonance

ADRIANI, OSCAR;D'ALESSANDRO, RAFFAELLO;
1997

Abstract

Using a sample of e(+)e(-) annihilation events collected with the L3 detector at the Z resonance corresponding to an integrated luminosity of 137 pb(-1), we have searched for anomalous production of gamma X final states where X represents stable, weakly interacting particles and the photon energy is greater than 15 GeV. The sample of events found is consistent with Standard Model expectations. Upper limits are set on Z gamma couplings, the tau neutrino magnetic moment, and the branching ratio for Z --> gamma X. (C) 1997 Elsevier Science B.V.
1997
412
201
209
M. Acciarri;O. Adriani;M. AguilarBenitez;S. Ahlen;J. Alcaraz;G. Alemanni;J. Allaby;A. Aloisio;G. Alverson;M. G. Alviggi;G. Ambrosi;H. Ande...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/772885
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