par Adloff, Catherine;Clerbaux, Barbara 
;Collard, Caroline ;Favart, Laurent ;Marage, Pierre ; [et al.]
Référence Physics letters. Section B, 523, 3-4, page (234-242)
Publication Publié, 2001
;Collard, Caroline ;Favart, Laurent ;Marage, Pierre ; [et al.]Référence Physics letters. Section B, 523, 3-4, page (234-242)
Publication Publié, 2001
Article révisé par les pairs
| Résumé : | A search for scalar and vector leptoquarks coupling to first generation fermions is performed in the HI experiment at the ep collider HERA. The analysis uses e-p data collected in 1998 and 1999 at a centre-of-mass energy of 320 GeV, corresponding to an integrated luminosity of ∼ 15 pb-1. No evidence for the direct production of such particles is found in a data sample with a large transverse momentum final state electron or with large missing transverse momentum, and constraints on leptoquark models are established. For a Yukawa coupling of electromagnetic strength leptoquarks are excluded for masses up to ∼ 290 GeV. This analysis complements the leptoquark searches performed previously using data collected whilst HERA was operating with positrons instead of electrons. © 2001 Elsevier Science B.V. All rights reserved. |
