Z{sup '} production at the LHC in the four-site Higgsless model

Journal Article · Sat Jan 01 00:00:00 EST 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.015012· OSTI ID:21503900

Accomando, Elena ^[1]; De Curtis, Stefania ^[2]; Dominici, Daniele; Fedeli, Luca ^[2]

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1. NExT Institute and School of Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ (United Kingdom)
2. INFN, 50019 Sesto Fiorentino, Firenze (Italy)

We study the phenomenology of the neutral gauge sector of the four-site Higgsless model, based on the SU(2){sub L}xSU(2){sub 1}xSU(2){sub 2}xU(1){sub Y} gauge symmetry, at present colliders. The model predicts the existence of two neutral and four charged extra gauge bosons, Z{sub 1,2} and W{sub 1,2}{sup {+-}}. We expand and update a previous study, by concentrating on the neutral sector. We derive new limits on Z{sub 1,2}-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{sup -1}, and at the 7 TeV LHC with L=1 fb{sup -1}. In contrast to other Higgsless theories characterized by almost fermiophobic extra gauge bosons, the four-site model allows sizable Z{sub 1,2}-boson couplings to standard model fermions. Owing to this feature, we find that in the next 2 years the extra Z{sub 1,2} bosons could be discovered in the favored Drell-Yan channel at the 7 TeV LHC for Z{sub 1,2} masses in the TeV region, depending on model parameters.

• OSTI ID: 21503900
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 1; Other Information: DOI: 10.1103/PhysRevD.83.015012; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

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