par Aaron, Francise;Marage, Pierre 
;Favart, Laurent ; [et al.]
Référence Physics letters. Section B, 678, page (335-343)
Publication Publié, 2009
;Favart, Laurent ; [et al.]Référence Physics letters. Section B, 678, page (335-343)
Publication Publié, 2009
Article révisé par les pairs
| Résumé : | A search for excited quarks is performed using the full e ± p data sample collected by the H1 experiment at HERA, corresponding to a total integrated luminosity of 475 pb - 1. The electroweak decays of excited quarks q * → q γ, q * → q Z and q * → q W with subsequent hadronic or leptonic decays of the W and Z bosons are considered. No evidence for first generation excited quark production is found. Mass dependent exclusion limits on q * 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 quark searches. © 2009 Elsevier B.V. |
