2003/02/28 by ZEUS Collaboration, S. Chekanov, M. Derrick +98 · 1 citation
Physics and Astronomy · #Astrophysics #Deep inelastic scattering #HERA #Hadron #High-Energy Particle Collisions Research #Invariant mass #Lepton #Luminosity #Neutral current #Neutrino #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #ZEUS (particle detector) #hep-ex
paper · pdf · doi:10.1016/s0370-2693(03)00333-2
published as Phys.Lett.B559:153-170,2003 · 28 pages, 4 figures, 2 tables, final version (minor changes in text) Addendum with new limits included
openalex publication_date 2003/04/23 · arxiv created 2004/05/19 · arxiv updated 2012/08/27 · openalex created_date 2022/05/12 · openalex updated_date 2026/08/05
A search for single-top production, ep → etX , has been made with the ZEUS detector at HERA using an integrated luminosity of 130.1 pb −1 . Events from both the leptonic and hadronic decay channels of the W boson resulting from the decay of the top quark were sought. For the leptonic mode, the search was made for events with isolated high-energy leptons and significant missing transverse momentum. For the hadronic decay mode, three-jet events in which two of the jets had an invariant mass consistent with that of the W were selected. No evidence for top production was found. The results are used to constrain single-top production via flavour-changing neutral current (FCNC) transitions. The ZEUS limit excludes a substantial region in the FCNC tuγ coupling not ruled out by other experiments.