Unique Identification of Lee-Wick Gauge Bosons at Linear Colliders

Rizzo, Thomas G

doi:10.1088/1126-6708/2007/06/070

Unique Identification of Lee-Wick Gauge Bosons at Linear Colliders

Journal Article · Fri Dec 14 04:00:00 EST 2007 · Journal of High Energy Physics (JHEP)

DOI:https://doi.org/10.1088/1126-6708/2007/06/070· OSTI ID:921004

Rizzo, Thomas G

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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Research Organization:: Stanford Linear Accelerator Center (SLAC)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC02-76SF00515

OSTI ID:: 921004

Report Number(s):: SLAC-PUB-13039; arXiv:0712.1791

Journal Information:: Journal of High Energy Physics (JHEP), Journal Name: Journal of High Energy Physics (JHEP)

Country of Publication:: United States

Language:: English

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