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Search for evidence of compositeness at LEP I

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<mark>Journal publication date</mark>07/1998
<mark>Journal</mark>The European Physical Journal C (EPJ C) - Particles and Fields
Issue number4
Volume4
Number of pages20
Pages (from-to)571-590
Publication statusPublished
Original languageEnglish

Abstract

Extensive searches for evidence of compositeness of quarks and leptons have been made in the complete set of ALEPH data from LEP running at the Z peak. These include searches for radiative and weak decays of excited fermions, produced either in pairs or singly, and a scalar partner of the Z. Coupling and branching ratio limits deduced from these searches are presented.