A heavy little Higgs and a light Z' under the radar

Abstract

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' boson. A possible signal observed by CDF at 240 GeV is consistent with the predicted Z' and a region below 150 GeV is largely unconstrained by collider data.

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

References in corpus (3)

• Measurement of the W -> lnu and Z/gamma* -> ll production cross sections in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector
• Probing a Very Narrow $Z^{\prime }$ Boson with CDF and D0 Data
• Search for a heavy neutral gauge boson in the dielectron channel with 5.4 fb-1 of ppbar collisions at sqrt(s) = 1.96 TeV

Cited by in corpus (3)

• The Role of Vector Boson Fusion in the Production of Heavy Vector Triplets at the LHC and HL-LHC
• Phenomenology of an $SU(2{)}_1\times SU(2{)}_2\times U(1{)}_Y$ model at the LHC
• A Simplified Model of Heavy Vector Singlets for the LHC and Future Colliders