Unique Identification of Lee-Wick Gauge Bosons at Linear Colliders

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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 ... continued below

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16 pages

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Rizzo, Thomas G. December 14, 2007.

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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{sup +}e{sup -} 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.

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16 pages

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  • Journal Name: Journal of High Energy Physics (JHEP)

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  • Report No.: SLAC-PUB-13039
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 921004
  • Archival Resource Key: ark:/67531/metadc900420

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  • December 14, 2007

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  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 2, 2016, 4:45 p.m.

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Rizzo, Thomas G. Unique Identification of Lee-Wick Gauge Bosons at Linear Colliders, article, December 14, 2007; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc900420/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.