Unique Identification of Lee-Wick Gauge Bosons at Linear Colliders

Abstract

Grinstein, O'Connell and Wise have recently presented an extension of the Standard Model (SM), based on the ideas of Lee and Wick (LW), which demonstrates an interesting way to remove the quadratically divergent contributions to the Higgs mass induced by radiative corrections. This model predicts the existence of negative-norm copies of the usual SM fields at the TeV scale with ghost-like propagators and negative decay widths, but with otherwise SM-like couplings. In earlier work, it was demonstrated that the LW states in the gauge boson sector of these models, though easy to observe, cannot be uniquely identified as such at the LHC. In this paper, we address the issue of whether or not this problem can be resolved at an $e^{+}{e}^{-}$ collider with a suitable center of mass energy range. We find that measurements of the cross section and the left-right polarization asymmetry associated with Bhabha scattering can lead to a unique identification of the neutral electroweak gauge bosons of the Lee-Wick type.

16 pages, 6 figures; discussion and references added

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• Higher-Derivative Lee-Wick Unification
• Lee-Wick Theories at High Temperature
• External Sources in Lee-Wick Theories
• Maxwell electrodynamics modified by CPT-even and Lorentz-violating dimension-6 higher-derivative terms
• Constraints on the Lee-Wick Higgs Sector
• Global Symmetries and Renormalizability of Lee-Wick Theories
• Ultraviolet Properties of the Higgs Sector in the Lee-Wick Standard Model
• A Conducting surface in Lee-Wick electrodynamics
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• On the dynamical breaking of chiral symmetry: a new mechanism
• The point-charge self-energy in Lee-Wick Theories
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• TeV Scale Lee-Wick Fields out of Large Extra Dimensional Gravity
• Vertex Displacements for Acausal Particles: Testing the Lee-Wick Standard Model at the LHC
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• Quintessence Dark Energy from strongly-coupled Higgs mass gap: Local and Non-local higher-derivative non-perturbative scenarios
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• Asymptotically nonlocal gravity
• Asymptotic nonlocality
• Non-perturbative Lee-Wick gauge theory: Towards Confinement and RGE with strong couplings
• Precision Electroweak Constraints on the N=3 Lee-Wick Standard Model
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