Bulk fields and supersymmetry in a slice of AdS

By T. Gherghetta, A. Pomarol. 2000

1,006 citations recorded by the source corpus.

Five-dimensional models where the bulk is a slice of AdS have the virtue of solving the hierarchy problem. The electroweak scale is generated by a “warp” factor of the induced metric on the brane where the standard model fields live. However, it is not necessary to confine the standard model fields on the brane and we analyze the possibility of having the fields actually living in the slice of AdS. Specifically, we study the behaviour of fermions, gauge bosons and scalars in this geometry and their implications on electroweak physics. These scenarios can provide an explanation of the fermion mass hierarchy by warp factors. We also consider the case of supersymmetry in the bulk, and analyze the conditions on the mass spectrum. Finally, a model is proposed where the warp factor generates a small (TeV) supersymmetry-breaking scale, with the gauge interactions mediating the breaking to the scalar sector.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/ff04d0b900a105bebf0410c3ff541a7c9880986e

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

Citations in the corpus

UV descriptions of composite Higgs models without elementary scalars (2013, background): “The same mixing can also, potentially, explain the origin of the fermion mass hierarchy, as the composite Higgs will couple much more strongly to composite fermions than elementary fermions [10, 11].”
Proton stability in grand unified theories, in strings and in branes (2006, background): “Later it was realized that to solve the hierarchy problem one needs only the Higgs fields on the TeV brane and the remaining standard model fields including quarks, leptons and the gauge bosons could live in the bulk [284, 285, 286, 287].”
A Model of Lepton Masses from a Warped Extra Dimension (2008, background): “Anarchic 5D flavor structure necessarily gives rise to flavor changing neutral currents (FCNC’s) in the quark sector, and to lepton flavor violation (LFV) in the lepton sector at treelevel [3, 5, 8, 6].”
Flavor Physics in the Quark Sector (2009, background): “Nowadays, in most phenomenological applications modifications of the original RS1 setup [1190] are considered, where gauge and matter fields propagate in the 5d bulk [176, 1192, 1193] and only the Higgs boson is confined on or near the IR brane.”
From the Trees to the Forest: A Review of Radiative Neutrino Mass Models (2017, background): “In warped or Randall-Sundrum extra-dimensional theories [61, 62], the geometry of fermion localisation in the bulk [63, 64] can lead to the suppression of Dirac neutrino masses through having a tiny overlap integral between the profile functions for the neutrino chiral components and the Higgs boson”
Opportunities in Flavour Physics at the HL-LHC and HE-LHC (2018, background): “This configuration has a built in automatic suppression of FCNCs, which are suppressed by the same zero mode overlaps that gives the hierarchy of masses [1325, 1326].”
Supersymmetry in Singular Spaces (2000, background): “(3)We will comment on the available information [17, 18, 19, 20, 21, 22] below.”