Searches for scalar top and scalar bottom quarks, as well as for mass-degenerate scalar quarks of the first two families are performed at 189 GeV centre-of-mass energy with the L3 detector at LEP, No signals are observed, Model-independent limits on the scalar top production cross sections are determined for the decay modes (t) over tilde(1) --> c<(chi)over tilde>(0)(1) and (t) over tilde(1) --> bl<(nu)over tilde>. For scalar quarks of the other flavours (q) over tilde --> q<(chi)over tilde>(0)(1) decays are considered. Within the framework; of the Minimal Supersymmetric Standard Model mass limits are set at 95% C.L. for these particles, Indirect limits on the gluino mass are also derived. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

Searches for scalar quarks in e(+)e(-) interactions at root s=189 GeV / M. Acciarri, P. Achard, O. Adriani, M. Aguilar-Benitez, J. Alcaraz, G. Alemanni, J. Allaby, A. Aloisio, M. G. Alviggi, G. Ambrosi, H. Anderhub, V. P. Andreev, T. Angelescu, F. Anselmo, A. Arefiev, T. Azemoon, T. Aziz, P. Bagnaia, L. Baksay, A. Balandras, et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - ELETTRONICO. - 471:(1999), pp. 308-320. [10.1016/S0370-2693(99)01363-5]

Searches for scalar quarks in e(+)e(-) interactions at root s=189 GeV

ADRIANI, OSCAR;BECATTINI, FRANCESCO;D'ALESSANDRO, RAFFAELLO;
1999

Abstract

Searches for scalar top and scalar bottom quarks, as well as for mass-degenerate scalar quarks of the first two families are performed at 189 GeV centre-of-mass energy with the L3 detector at LEP, No signals are observed, Model-independent limits on the scalar top production cross sections are determined for the decay modes (t) over tilde(1) --> c<(chi)over tilde>(0)(1) and (t) over tilde(1) --> bl<(nu)over tilde>. For scalar quarks of the other flavours (q) over tilde --> q<(chi)over tilde>(0)(1) decays are considered. Within the framework; of the Minimal Supersymmetric Standard Model mass limits are set at 95% C.L. for these particles, Indirect limits on the gluino mass are also derived. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
1999
471
308
320
M. Acciarri;P. Achard;O. Adriani;M. Aguilar-Benitez;J. Alcaraz;G. Alemanni;J. Allaby;A. Aloisio;M. G. Alviggi;G. Ambrosi;H. Anderhub;V. P. ...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/775473
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