par Aaron, Francise;Marage, Pierre 
;Favart, Laurent ; [et al.]
Référence Physics letters. Section B, 666, page (131-139)
Publication Publié, 2008
;Favart, Laurent ; [et al.]Référence Physics letters. Section B, 666, page (131-139)
Publication Publié, 2008
Article révisé par les pairs
| Résumé : | A search for excited electrons is performed using the full e ± p data sample collected by the H1 experiment at HERA, corresponding to a total luminosity of 475 pb -1. The electroweak decays of excited electrons e * → e γ, e * → e Z and e * → ν W with subsequent hadronic or leptonic decays of the W and Z bosons are considered. No evidence for excited electron production is found. Mass dependent exclusion limits on e * production cross sections and on the ratio f / Λ of the coupling to the compositeness scale are derived within gauge mediated models. These limits extend the excluded region compared to previous excited electron searches. The e * production via contact interactions is also addressed for the first time in ep collisions. © 2008 Elsevier B.V. All rights reserved. |
