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 KK Parity in Warped Extra Dimension

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We construct models with a Kaluza-Klein KK parity in a five- dimensional warped geometry, in an attempt to address the little hierarchy problem present in setups with bulk Standard Model fields. The lightest KK particle LKP is stable and can play the role of dark matter. We consider the possibilities of gluing two identical slices of 5D AdS in either the UV IR-UV-IR model or the IR region UV-IR-UV model and discuss the model-building issues as well as phenomenological properties in both cases. In particular, we find that the UV-IR-UV model is not gravitationally stable and that additional mechanisms might be required in the IR-UV-IR model in order to address flavor issues. Collider signals of the warped KK parity are different from either the conventional warped extra dimension without KK parity, in which the new particles are not necessarily pair-produced, or the KK parity in flat universal extra dimensions, where each KK level is nearly degenerate in mass. Dark matter and collider properties of a TeV mass KK Z gauge boson as the LKP are discussed.

Author: Kaustubh Agashe; Adam Falkowski; Ian Low; Geraldine Servant

Source: https://archive.org/


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