Z′-bosons in supersymmetric E6 models confront electroweak data

  title={Z′-bosons in supersymmetric E6 models confront electroweak data},
  author={Gihyuk Cho and Kaoru Hagiwara and Yoshiaki Umeda},
  journal={Nuclear Physics},
22 Citations

Leptophobic Z′ in models with multiple Higgs doublet fields

A bstractWe study the collider phenomenology of the leptophobic Z′ boson from an extra U(1)′ gauge symmetry in models with N -Higgs doublet fields. We assume that the Z′ boson at tree level has (i)

Phenomenology of E6-inspired leptophobic Z′ boson at the LHC

A bstractWe study collider phenomenology of a leptophobic Z′ boson existing in eight scenarios of the E6 grand unified theory, differing in particle embeddings. We first review the current bound on

Low energy theorems and the unitarity bounds in the extra U ( 1 ) superstring inspired E 6 models

The conventional method using low energy theorems derived by Chanowitz et al. [Phys. Rev. Lett. 57, 2344 (1986);] does not seem to lead to an explicit unitarity limit in the scattering processes of

Perturbative unification of gauge couplings in supersymmetric E6 models

We study gauge coupling unification in supersymmetric (SUSY) E6 models where an additional U(1)′ gauge symmetry is broken near the TeV scale and a number of exotic matter fields from the 27

Flavour-changing neutral currents in models with extraZ′ boson

New neutral gauge bosonsZ′ are the features of many models addressing the physics beyond the standard model. Together with the existence of new neutral gauge bosons, models based on extended gauge

Flavor changing effects in family nonuniversal Z' models

Flavor-changing and CP-violating interactions of Z' to fermions are generally present in models with extra U(1) gauge symmetry that are string-inspired or related to broken gauged family symmetry. We



Leptophobic U(1)'s and the Rb-Rc anomalies.

A set of models consistent with a restrictive set of principles: unification of the SM gauge couplings, vector- like additional matter, and couplings which are both generation-independent and leptophobic are constructed, which are anomaly-free, perturbative up to the GUT scale, and contain realistic mass spectra.

Precision tests of the standard electroweak model

Part 1 The standard electroweak model: structure of the standard model, P. Langacker renormalization of the standard model, W. Hollik predictions for e+e- processes, W. Holik radiative corrections to

Search for a Z' at the Z resonance

Search for New Gauge Bosons Decaying into Dileptons in p̄p Collisions at s} = 1.8 TeV

We have searched for heavy neutral gauge bosons (2’) in jjp collisions at Js = 1.8 TeV. The data were obtained using the CDF detector during 19921993 run corresponding to an integrated luminosity of


We compile phenomenological constraints on the minimal low-energy effective theory which can be obtained from the superstring by Calabi-Yau compactification. Mixing with the single additional neutral

Analysis of electroweak precision data and prospects for future improvements

Abstract. We update our previous work on an analysis of the electroweak data by including new and partly preliminary data available up to the 1996 summer conferences. The new results on the $Z$