Searches for scalar top and scalar bottom quarks in e(+)e(-) interactions at 161GeV <=root s <= 183GeV

Searches for scalar top and scalar bottom quarks in e(+)e(-) interactions at 161GeV <=root s <= 183GeV

Searches for scalar top and scalar bottom quarks have been performed at center-of-mass energies between 161 GeV and 183 GeV using the L3 detector at LEP. No signal is observed. Model-independent limits on production cross sections are determined for the two decay channels t̃1 → cχ̃0 1 and b̃1 → b χ̃...

Full description

Bibliographic Details
Main Authors: Acciarri, M, Adriani, O, Aguilar-Benitez, M, Ahlen, S, Alcaraz, J, Alemanni, G, Allaby, J, Aloisio, A, Alviggi, MG, Ambrosi, G, Anderhub, H, Andreev, V, Angelescu, T, Anselmo, F, Arefiev, A, Azemoon, T, Aziz, T, Bagnaia, P, Baksay, L, Banerjee, S, Banicz, K, Barczyk, A, Barillere, R, Barone, L
Format: Journal article
Published: 1999
Description
Summary:Searches for scalar top and scalar bottom quarks have been performed at center-of-mass energies between 161 GeV and 183 GeV using the L3 detector at LEP. No signal is observed. Model-independent limits on production cross sections are determined for the two decay channels t̃1 → cχ̃0 1 and b̃1 → b χ̃0 1. Within the framework of the Minimal Supersymmetric extension of the Standard Model mass limits are derived. For mass differences between t̃1 and χ̃0 1 greater than 10 GeV a 95% C.L. limit of 81.5 GeV is set on the mass of the Supersymmetric partner of the left-handed top. A supersymmetric partner of the left-handed bottom with a mass below 80 GeV is excluded at 95% C.L. if the mass difference between b̃1 and χ̃1 is greater than 20 GeV. © 1999 Published by Elsevier Science B.V. All rights reserved.

Similar Items