Search for R-parity violating decays of scalar fermions at LEP

Kartvelishvili, Vakhtang (2000) Search for R-parity violating decays of scalar fermions at LEP. European Physical Journal C: Particles and Fields, 12 (1). pp. 1-24. ISSN 1434-6044

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Abstract

A search for pair produced scalar fermions with couplings that violate R-parity has been performed using a data sample corresponding to an integrated luminosity of 56 pb −1−1 at a centre-of-mass energy of √s=183 GeV collected with the OPAL detector at LEP. An important consequence of R-parity breaking interactions is that the lightest supersymmetric particle is expected to be unstable. Searches for R-parity violating decays of charged sleptons, sneutrinos and stop quarks have been performed under the assumptions that the lightest supersymmetric particle decays promptly and that only one of the R-parity violating couplings is dominant for each of the decay modes considered. Such processes would yield multi-leptons, jets plus leptons or multi-jets, with or without missing energy, in the final state. No significant excess of such events has been observed. Limits on the production cross-sections of scalar fermions in R-parity violating scenarios are obtained. Mass exclusion regions are also presented in the framework of the Constrained Minimal Supersymmetric Standard Model.

Item Type: Journal Article
Journal or Publication Title: European Physical Journal C: Particles and Fields
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/2200/2201
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 82832
Deposited By: ep_importer_pure
Deposited On: 14 Nov 2016 11:06
Refereed?: Yes
Published?: Published
Last Modified: 11 Feb 2020 09:08
URI: https://eprints.lancs.ac.uk/id/eprint/82832

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