2011/02/28 by Michael S. Chanowitz
Physics and Astronomy · #Boson #Collider #Collider Detector at Fermilab #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Electroweak interaction #Fermilab #Higgs boson #Large Hadron Collider #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Standard Model (mathematical formulation) #Tevatron #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.84.035014
published as Phys. Rev. D 84, 035014 (2011) · 14 pages, 3 figures. Version 2 corrects coding error for Moller scattering and includes effect of Z-Z' mixing on Z' decays, with small changes in results. Added new figures, tables, and citations. Version 3 is as published in PRD, adds discussion of fine tuning of model parameters
openalex publication_date 2011/08/16 · arxiv created 2011/09/01 · arxiv updated 2013/05/29 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The original littlest Higgs model with universal fermion couplings is found to be consistent with precision electroweak data but is strongly constrained by Tevatron limits on the predicted centi-weak Z^\ensuremath' boson. A possible signal observed by the Collider Detector at Fermilab (CDF) at 240 GeV is consistent with the predicted Z^\ensuremath', and a region below 150 GeV is largely unconstrained by collider data. LHC searches for narrow dilepton resonances below 500 GeV will have sufficient sensitivity to discover the Z^\ensuremath' boson or to exclude the model over most of the range allowed by the electroweak fits.