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 (t) over tilde --> c<(chi)over tilde>(0)(1) and (b) over tilde(1) --> b<(chi)over tilde>(0)(1). Within the framework of the Minimal Supersymmetric extension of the Standard Model mass limits are derived. For mass differences between (t) over tilde(1) and <(chi)over tilde>(0)(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 bl and <(chi)over tilde>(0)(1) is greater than 20 GeV. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

Searches for scalar top and scalar bottom quarks in e(+)e(-) interactions at 161GeV <=root s <= 183GeV / M., A., O., A., M., A.B., S., A., J., A., G., A., J., A., A., A., M. G., A., G., A., H., A., V. P., A., T., A., F., A., A., A., T., A., T., A., Bagnaia, P., L., B., S., B., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 445:(1999), pp. 428-438. [10.1016/S0370-2693(98)01505-6]

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

BAGNAIA, Paolo;FACCINI, Riccardo;GENTILE, Simonetta;GIAGU, Stefano;ORGANTINI, Giovanni;
1999

Abstract

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 (t) over tilde --> c<(chi)over tilde>(0)(1) and (b) over tilde(1) --> b<(chi)over tilde>(0)(1). Within the framework of the Minimal Supersymmetric extension of the Standard Model mass limits are derived. For mass differences between (t) over tilde(1) and <(chi)over tilde>(0)(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 bl and <(chi)over tilde>(0)(1) is greater than 20 GeV. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
1999
01 Pubblicazione su rivista::01a Articolo in rivista
Searches for scalar top and scalar bottom quarks in e(+)e(-) interactions at 161GeV <=root s <= 183GeV / M., A., O., A., M., A.B., S., A., J., A., G., A., J., A., A., A., M. G., A., G., A., H., A., V. P., A., T., A., F., A., A., A., T., A., T., A., Bagnaia, P., L., B., S., B., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 445:(1999), pp. 428-438. [10.1016/S0370-2693(98)01505-6]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/472560
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