Simple non-Abelian extensions of the standard model gauge group and the diboson excesses at the LHC

Abstract

The ATLAS collaboration reported excesses at around 2 TeV in the di-boson production decaying into hadronic final states. We consider the possibility of explaining the excesses with extra gauge bosons in two simple non-Abelian extensions of the Standard Model. One is the so-called $G(221)$ models with a symmetry structure of $SU(2{)}_1\otimes SU(2{)}_2\otimes U(1{)}_X$ and the other is the $G(331)$ models with an extended symmetry of $SU(3{)}_C\otimes SU(3{)}_L\otimes U(1{)}_X$. The $W^{\prime }$ and $Z^{\prime }$ bosons emerge after the electroweak symmetry is spontaneously broken. Two patterns of symmetry breaking in the $G(221)$ models are considered in this work: one is $SU(2{)}_L\otimes SU(2{)}_2\otimes U(1{)}_X\to SU(2{)}_L\otimes U(1{)}_Y$, the other is $SU(2{)}_1\otimes SU(2{)}_2\otimes U(1{)}_Y\to SU(2{)}_L\otimes U(1{)}_Y$. The symmetry breaking of the $G(331)$ model is $SU(3{)}_L\otimes U(1{)}_X\to SU(2{)}_L\otimes U(1{)}_Y$. We perform a global analysis of $W^{\prime }$ and $Z^{\prime }$ phenomenology in ten new physics models, including all the channels of $W^{\prime }/Z^{\prime }$ decay. Our study shows that the leptonic mode and the dijet mode of $W^{\prime }/Z^{\prime }$ decays impose a very stringent bound on the parameter space in several new physics models. Such tight bounds provide a useful guide for building new physics models to address on the diboson anomalies. We also note that the Left-Right and Lepton-Phobic models can explain the $3.4\sigma$ $WZ$ excess if the $2.6\sigma$ deviation in the $W^{+}{W}^{-}$ pair around 2~TeV were confirmed to be a fluctuation of the SM backgrounds.

Publish version; title changed as suggested by journal Editor

References in corpus (27)

• New parton distributions for collider physics
• Search for high-mass dilepton resonances in pp collisions at sqrt(s) = 8 TeV with the ATLAS detector
• Search for new phenomena in the dijet mass distribution using $p-p$ collision data at $\sqrt{s}=8$ TeV with the ATLAS detector
• Search for resonances and quantum black holes using dijet mass spectra in proton-proton collisions at sqrt(s) = 8 TeV
• Search for physics beyond the standard model in dilepton mass spectra in proton-proton collisions at sqrt(s) = 8 TeV
• Search for massive resonances in dijet systems containing jets tagged as W or Z boson decays in pp collisions at sqrt(s) = 8 TeV
• Search for massive resonances decaying into pairs of boosted bosons in semi-leptonic final states at sqrt(s) = 8 TeV
• The Anatomy of Quark Flavour Observables in 331 Models in the Flavour Precision Era
• A Three Site Higgsless Model
• Z-Z' Mixing and Z-Mediated FCNCs in SU(3)_C x SU(3)_L x U(1)_X Models
• Search for new particles in events with one lepton and missing transverse momentum in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• A W' boson near 2 TeV: predictions for Run 2 of the LHC
• LHC Higgs Signatures from Extended Electroweak Gauge Symmetry
• Interpretations of the ATLAS Diboson Resonances
• 2 TeV Walking Technirho at LHC?
• G221 Interpretations of the Diboson and Wh Excesses
• Search for $W^{\prime }\to t\bar{b}$ in the lepton plus jets final state in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Discovery and Identification of W' and Z' in SU(2) x SU(2) x U(1) Models at the LHC
• A composite Heavy Vector Triplet in the ATLAS di-boson excess
• Searching for doubly charged Higgs bosons at the LHC in a 3-3-1 Model
• Top Quark Polarization As A Probe of Models with Extra Gauge Bosons
• Extra Neutral Gauge Boson from Two Versions of the 3-3-1 Model in Future Linear Colliders
• Heavy quark signals from radiative corrections to the $Z^{\prime }$ boson decay in 3-3-1 models
• Bilepton contributions to the neutrinoless double beta decay in the economical 3-3-1 model
• Probing doubly charged Higgs in $e^{+}{e}^{-}$ Colliders in 3-3-1 Model
• Doubly charged Higgs through photon photon collisions in 3-3-1 models
• Production of multiple charged Higgs bosons in 3-3-1 models

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