2010/10/01 by Elena Accomando, Stefania De Curtis, Daniele Dominici +2 · 14 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Boson #Fermion #Gauge boson #Gauge theory #Large Hadron Collider #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Tevatron #hep-ph
paper · pdf · doi:10.1103/physrevd.83.015012
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 83(1) (American Physical Society) · Latex file, 33 pages, 12 figures
arxiv created 2010/10/01 · openalex publication_date 2011/01/25 · arxiv updated 2011/02/25 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study the phenomenology of the neutral gauge sector of the four-site Higgsless model, based on the SU(2)L\ifmmode×\else\texttimes\fiSU(2)1\ifmmode×\else\texttimes\fiSU(2)2\ifmmode×\else\texttimes\fiU(1)Y gauge symmetry, at present colliders. The model predicts the existence of two neutral and four charged extra gauge bosons, Z1,2 and W1,2^\ifmmode±\else\textpm\fi. We expand and update a previous study, by concentrating on the neutral sector. We derive new limits on Z1,2-boson masses and couplings from recent direct searches at the Tevatron. We moreover estimate the discovery potential at the Tevatron with a project luminosity L=10 fb^\ensuremath-1, and at the 7 TeV LHC with L=1 fb^\ensuremath-1. In contrast to other Higgsless theories characterized by almost fermiophobic extra gauge bosons, the four-site model allows sizable Z1,2-boson couplings to standard model fermions. Owing to this feature, we find that in the next 2 years the extra Z1,2 bosons could be discovered in the favored Drell-Yan channel at the 7 TeV LHC for Z1,2 masses in the TeV region, depending on model parameters.