Results 21 to 30 of about 1,088 (165)
Kinetic mixing, dark photons and extra dimensions. Part II: fermionic dark matter
Journal of High Energy Physics, 2018 Extra dimensions can be very useful tools when constructing new physics models. Previously, we began investigating toy models for the 5-D analog of the kinetic mixing/vector portal scenario where the interactions of bulk dark matter with the brane ...
Thomas G. Rizzo
doaj +1 more source
Exact greybody factors for the brane scalar field of five-dimensional rotating black holes
Journal of High Energy Physics, 2019 We study scalar perturbations of the five-dimensional rotating black holes and find an exact solution giving exact description of the Hawking radiation.
Young-Hwan Hyun +2 more
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, 2015 Large Extra Dimensions Models have been proposed to remove the hierarchy problem and give an explanation why the gravity is so much weaker than the other three forces. In this work, we present an analysis of Monte Carlo data events for new physics signatures of spin-2 Graviton in context of ADD model with total dimensions $D=4+δ,$ $δ= 1,2,3,4,5,6 ...
Bakhet, Nady +2 more
openaire +2 more sources
R D * $$ {R}_{D^{\left(*\right)}} $$ in custodial warped space
Journal of High Energy Physics, 2018 Flavor physics experiments allow to probe the accuracy of the Standard Model (SM) description at low energies, and are sensitive to new heavy gauge bosons that couple to quarks and leptons in a relevant way.
Marcela Carena +3 more
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Signatures of microscopic black holes and extra dimensions at future neutrino telescopes
Journal of High Energy Physics, 2020 In scenarios with large extra dimensions (LEDs), the fundamental Planck scale can be low enough that collisions between high-energy particles may produce microscopic black holes.
Katherine J. Mack +2 more
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Dark bubbles: decorating the wall
Journal of High Energy Physics, 2020 Motivated by the difficulty of constructing de Sitter vacua in string theory, a new approach was proposed in arXiv:1807.01570 and arXiv:1907.04268 , where four dimensional de Sitter space was realized as the effective cosmology, with matter and radiation,
Souvik Banerjee +2 more
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Electroweak Kaluza-Klein dark matter
Journal of High Energy Physics, 2017 In models with universal extra dimensions (UED), the lightest Kaluza-Klein excitation of neutral electroweak gauge bosons is a stable, weakly interacting massive particle and thus is a candidate for dark matter thanks to Kaluza-Klein parity.
Thomas Flacke +4 more
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A small weak scale from a small cosmological constant
Journal of High Energy Physics, 2017 We propose a framework in which Weinberg’s anthropic explanation of the cosmological constant problem also solves the hierarchy problem. The weak scale is selected by chiral dynamics that controls the stabilization of an extra dimension.
Asimina Arvanitaki +4 more
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Advanced Materials, EarlyView.Molecular doping of conjugated polymers is fundamentally constrained by thermodynamic phase behavior. This Perspective reframes doping efficiency and stability in terms of miscibility limits, binodals, and solvus boundaries, highlighting the role of effective interaction parameters and charge transfer.
Somayeh Kashani +10 more
wiley +1 more source
Direct Observation of Vortex Liquid Droplets in the Iron Pnictide Superconductor CaKFe4As4 at 0.5Tc
Advanced Science, EarlyView.Vortex matter in the iron‐based superconductor CaKFe4As4${\rm CaKFe}_4{\rm As}_4$ is visualized at the nanoscale, revealing the unexpected emergence of vortex‐liquid droplets far below the critical temperature. These localized fluctuating regions coexist with a vortex solid, demonstrating that dissipation‐related dynamics arise well before macroscopic ...
Óscar Bou Marqués +9 more
wiley +1 more source