Clockwork/linear dilaton: structure and phenomenology

Gian F. Giudice, Yevgeny Kats, Matthew McCullough, Riccardo Torre, Alfredo Urbano

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44 Scopus citations

Abstract

The linear dilaton geometry in five dimensions, rediscovered recently in the continuum limit of the clockwork model, may offer a solution to the hierarchy problem which is qualitatively different from other extra-dimensional scenarios and leads to distinctive signatures at the LHC. We discuss the structure of the theory, in particular aspects of naturalness and UV completion, and then explore its phenomenology, suggesting novel strategies for experimental searches. In particular, we propose to analyze the diphoton and dilepton invariant mass spectra in Fourier space in order to identify an approximately periodic structure of resonant peaks. Among other signals, we highlight displaced decays from resonantly-produced long-lived states and high-multiplicity final states from cascade decays of excited gravitons.

Original languageEnglish
Article number9
JournalJournal of High Energy Physics
Volume2018
Issue number6
DOIs
StatePublished - 1 Jun 2018

Keywords

  • Phenomenology of Field Theories in Higher Dimensions

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