2015/04/14 by Aqeel Ahmed, Ahmed, Aqeel, Bohdan Grza̧dkowski +7 · 2 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #Particle physics theoretical and experimental studies #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.48550/arxiv.1504.03706
38 pages, 8 figures and 2 tables. v2: a new subsection (2.2) on radius stabilization with an SU(2) bulk Higgs doublet is added, which provides exact analytic background solutions (with full backreaction) of the Higgs-gravity 5D warped setup. References added, matches the version to appear in JHEP
openalex publication_date 2015/04/14 · arxiv created 2015/09/15 · arxiv updated 2015/09/16 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We construct a 5D ℤ2-symmetric model with three D3-branes: two IR ones with negative tension located at the ends of an extra-dimensional interval and a UV-brane with positive tension placed in the middle of the interval -- IR-UV-IR model. The background solutions for this geometric setup are found without and with taking into account the backreaction of the matter fields. A 5D SU(2) Higgs doublet is employed as the Goldberger-Wise stabilizing field in this geometry and solutions of the 5D coupled scalar-gravity equations are found by using the superpotential method. Within this setup we investigate the low-energy (zero-mode) effective theory for the bulk Standard Model (SM) bosonic sector. The ℤ2-even zero-modes correspond to known standard degrees of freedom, whereas the ℤ2-odd zero modes might serve as a dark sector. The effective low-energy scalar sector contains a scalar which mimics the SM Higgs boson and a second stable scalar particle (dark-Higgs) is a dark matter candidate; the latter is a component of the zero-mode of the ℤ2-odd Higgs doublet. The model that results from the ℤ2-symmetric background geometry resembles the Inert Two Higgs Doublet Model. The effective theory turns out to have an extra residual SU(2)× U(1) global symmetry that is reminiscent of an underlying 5D gauge transformation for the odd degrees of freedom. At tree level the SM Higgs and the dark-Higgs have the same mass; however, when leading radiative corrections are taken into account the dark-Higgs turns out to be heavier than the SM Higgs. Implications for dark matter are discussed; it is found that the dark-Higgs can provide only a small fraction of the observed dark matter abundance.