Low-energy probes of a warped extra dimension

We investigate a natural realization of a light Abelian hidden sector in an extended Randall-Sundrum (RS) model. In addition to the usual RS bulk we consider a second warped space containing a bulk U(1) x gauge theory with a characteristic IR scale of order a GeV. This Abelian hidden sector can coup...

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Bibliographic Details
Published inThe journal of high energy physics Vol. 2010; no. 5
Main Authors McDonald, Kristian L., Morrissey, David E.
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer-Verlag 01.05.2010
Springer Nature B.V
Subjects
Classical and Quantum Gravitation
Elementary Particles
Gauge theory
High energy physics
Industrial plants
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Relativity Theory
String Theory
Phenomenology of Field Theories in Higher Dimensions
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Summary:We investigate a natural realization of a light Abelian hidden sector in an extended Randall-Sundrum (RS) model. In addition to the usual RS bulk we consider a second warped space containing a bulk U(1) x gauge theory with a characteristic IR scale of order a GeV. This Abelian hidden sector can couple to the standard model via gauge kinetic mixing on a common UV brane. We show that if such a coupling induces significant mixing between the lightest U(1) x gauge mode and the standard model photon and Z, it can also induce significant mixing with the heavier U(1) x Kaluza-Klein (KK) modes. As a result it might be possible to probe several KK modes in upcoming fixed-target experiments and meson factories, thereby offering a new way to investigate the structure of an extra spacetime dimension.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP05(2010)056