Limits on Z decay branching ratios into neutralinos are reported. They were obtained from searches for monojets, acoplanar jets, acoplanar lepton pairs, single photons and acoplanar photon pairs as signaturs for the reactions e+e- → χχ′ and e+e- → χχ′, where χ is the lightest neutralino and χ′ any heavier one. The data sample used for these searches corresponds to about 23 000 events of Z decay into multihadrons, collected at LEP by the ALEPH detector for centre of mass energies at and near the Z peak. The results obtained are used to restrict the parameter space of the minimal supersymmetric standard model.

Search for neutralino production in Z decays / D. Decamp, B. Deschizeaux, C. Goy, J.-P. Lees, M.-N. Minard, J.M. Crespo, M. Delfino, E. Fernandez, P. Mato, R. Miquel, Ll.M. Mir, S. Orteu, A. Pacheco, J.A. Perlas, E. Tubau, M.G. Catanesi, M. de Palma, A. Farilla, G. Iaselli, G. Maggi, et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - ELETTRONICO. - 244:(1990), pp. 541-550. [10.1016/0370-2693(90)90361-9]

Search for neutralino production in Z decays

FOCARDI, ETTORE;
1990

Abstract

Limits on Z decay branching ratios into neutralinos are reported. They were obtained from searches for monojets, acoplanar jets, acoplanar lepton pairs, single photons and acoplanar photon pairs as signaturs for the reactions e+e- → χχ′ and e+e- → χχ′, where χ is the lightest neutralino and χ′ any heavier one. The data sample used for these searches corresponds to about 23 000 events of Z decay into multihadrons, collected at LEP by the ALEPH detector for centre of mass energies at and near the Z peak. The results obtained are used to restrict the parameter space of the minimal supersymmetric standard model.
1990
244
541
550
D. Decamp;B. Deschizeaux;C. Goy;J.-P. Lees;M.-N. Minard;J.M. Crespo;M. Delfino;E. Fernandez;P. Mato;R. Miquel;Ll.M. Mir;S. Orteu;A. Pache...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/627213
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