Large star/rose extra dimension with small leaves/petals

Jan 20, 2020
49 pages
Published in:
  • Int.J.Mod.Phys.A 35 (2020) 30, 2050182
  • Published: Oct 30, 2020
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Abstract: (WSP)
In this paper, we propose to compactify a single Large Extra Dimension (LED) on a star/rose graph with a large number of identical leaves/petals. The 5D Planck scale can be chosen to be ΛP(5) ∼𝒪(1) TeV which can provide a path to solve the gauge hierarchy problem. The leaf/petal length scale is of 𝒪(1/ΛEW), where ΛEW ∼ 100 GeV is the weak scale, without the large geometrical hierarchy of the traditional LED models to stabilize. The 4D fields of the SM are localized on a 3-brane at the central vertex of the star/rose graph. We predict a tower of feebly coupled weak scale Kaluza–Klein (KK) gravitons below a regime of strongly coupled gravitational phenomena above the TeV scale. Moreover, we reformulate in our setup the LED mechanism to generate light Dirac neutrinos, where the right-handed neutrinos are KK-modes of gauge singlet fermions propagating in the bulk. A large number of KK-gravitons and KK-neutrinos interact only gravitationally and thus constitute a hidden sector.
Note:
  • 45 pages (excluding bibliography). v5: Minor corrections compared to the journal (IJMPA) version
  • 11.10.Kk
  • 11.25.Mj
  • 11.30.Fs
  • 13.15.+g
  • 14.80.Rt
  • Beyond Standard Model
  • Gauge Hierarchy Problem
  • Large Extra Dimensions
  • Brane Worlds
  • Field Theories in Higher Dimensions