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Absolute lower limits on the masses of selectrons and sneutrinos in the MSSM

Research output: Contribution to journalJournal article

Published

<mark>Journal publication date</mark>19/09/2002
<mark>Journal</mark>Physics Letters B
Issue1-2
Volume544
Number of pages16
Pages73-88
<mark>Original language</mark>English

Abstract

The results of searches for selectrons, charginos and neutralinos performed with the data collected by the ALEPH detector at LEP at centre-of-mass energies up to 209 GeV are interpreted in the framework of the Minimal Supersymmetric extension of the Standard Model with R-parity conservation. Under the assumptions of gaugino and sfermion mass unification and no sfermion mixing, an absolute lower limit of 73 GeV/c2 is set on the mass of the lighter selectron at the 95% confidence level. Similarly, limits on the masses of the heavier selectron and of the sneutrino are set at 107 and 84 GeV/c2, respectively. Additional constraints are derived from the results of the searches for Higgs bosons. The results are also interpreted in the framework of minimal supergravity.