Signatures of Spherical Compactifications at the LHC

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TeV-scale extra dimensions may play an important role in electroweak or supersymmetry breaking. We examine the phenomenology of such dimensions, compactified on a sphere S{sup n}, n {ge} 2, and show that they possess distinct features and signatures. For example, unlike flat toroidal manifolds, spheres do not trivially allow fermion massless modes. Acceptable phenomenology then generically leads to ''non-universal'' extra dimensions with ''pole-localized'' 4-d fermions; the bosonic fields can be in the bulk. Due to spherical symmetry, some Kaluza-Klein (KK) modes of bulk gauge fields are either stable or extremely long-lived, depending on the graviton KK spectrum. Using precision electroweak ... continued below

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21 pages

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Davoudiasl, Hooman & Rizzo, Thomas G. February 12, 2007.

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TeV-scale extra dimensions may play an important role in electroweak or supersymmetry breaking. We examine the phenomenology of such dimensions, compactified on a sphere S{sup n}, n {ge} 2, and show that they possess distinct features and signatures. For example, unlike flat toroidal manifolds, spheres do not trivially allow fermion massless modes. Acceptable phenomenology then generically leads to ''non-universal'' extra dimensions with ''pole-localized'' 4-d fermions; the bosonic fields can be in the bulk. Due to spherical symmetry, some Kaluza-Klein (KK) modes of bulk gauge fields are either stable or extremely long-lived, depending on the graviton KK spectrum. Using precision electroweak data, we constrain the lightest gauge field KK modes to lie above {approx_equal} 4 TeV. We show that some of these KK resonances are within the reach of the LHC in several different production channels. The models we study can be uniquely identified by their collider signatures.

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21 pages

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

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  • Report No.: SLAC-PUB-12327
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 899561
  • Archival Resource Key: ark:/67531/metadc888088

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Office of Scientific & Technical Information Technical Reports

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  • February 12, 2007

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 9, 2016, 7:10 p.m.

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Davoudiasl, Hooman & Rizzo, Thomas G. Signatures of Spherical Compactifications at the LHC, article, February 12, 2007; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc888088/: accessed December 10, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.