Results 51 to 60 of about 21,879 (282)

Dark matter in multi-singlet extensions of the Standard Model

open access: yesJournal of High Energy Physics
We study the simplest extensions of the Standard Model (SM) that provide Dark Matter (DM) candidates, built with the addition of real singlets and new Z 2 $$ {\mathcal{Z}}_2 $$ symmetries.
Maria Gonçalves   +3 more
doaj   +1 more source

Mono-everything: combined limits on dark matter production at colliders from multiple final states

open access: yes, 2013
Searches for dark matter production at particle colliders are complementary to direct-detection and indirect-detection experiments, and especially powerful for small masses, $m_ ...
Berge, David   +2 more
core   +1 more source

A Radiative Model for the Weak Scale and Neutrino Mass via Dark Matter [PDF]

open access: yes, 2016
We present a three-loop model of neutrino mass in which both the weak scale and neutrino mass arise as radiative effects. In this approach, the scales for electroweak symmetry breaking, dark matter, and the exotics responsible for neutrino mass, are ...
Ahriche, Amine   +2 more
core   +2 more sources

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

Singlet-doublet fermionic dark matter in gauge theory of baryons

open access: yesJournal of High Energy Physics
We are considering a minimal U(1) B extension of the Standard Model (SM) by promoting the baryon number as a local gauge symmetry to accommodate a stable dark matter (DM) candidate. The gauge theory of baryons induces non-trivial triangle gauge anomalies,
Taramati   +4 more
doaj   +1 more source

Radiotherapy Enhancement by Gold Nanocluster‐functionalized Nanoliposomes Using Polychromatic Orthovoltage X‐ray Irradiation

open access: yesAdvanced Materials Interfaces, EarlyView.
Lipid drug carriers to which ultra‐small gold nanoparticles were added enabled more efficient radiotherapy of cultured pancreatic cancer tumors. These nanoparticles boosted radiation‐induced damage to tumors by generating more reactive molecules, though higher gold levels are needed for strong benefits.
Nazareth Milagros Carigga Gutierrez   +17 more
wiley   +1 more source

Signatures of sub-GeV dark matter beams at neutrino experiments

open access: yes, 2012
We study the high-luminosity fixed-target neutrino experiments at MiniBooNE, MINOS and T2K and analyze their sensitivity to light stable states, focusing on MeV--GeV scale dark matter. Thermal relic dark matter scenarios in the sub-GeV mass range require
Adam Ritz   +3 more
core   +1 more source

New Directions in Focused Ion Beam Induced Deposition for the Nanoprinting of Functional 3D Heterostructures

open access: yesAdvanced Materials Technologies, EarlyView.
Here, it is shown that focused ion beam induced deposition (FIBID) using helium and neon ions enables advanced high‐resolution 3D nanoprinting achieving precise multimaterial architectures and engineered internal voids. Thus, FIBID with finely focused noble gas ion species is presented as a unique platform for designing functional nanomaterials for ...
Frances Isabel Allen
wiley   +1 more source

Darkonia at colliders

open access: yesJournal of High Energy Physics
Dark matter may form bound states in a dark sector with an attractive force between two dark matter particles. Searches for dark matter at colliders can differ dramatically from routine searches if bound states, dubbed darkonia, are produced and decay ...
Yang Bai, Susanne Westhoff
doaj   +1 more source

Dark matter freeze-in with a heavy mediator: beyond the EFT approach

open access: yesJournal of High Energy Physics, 2022
We study dark matter freeze-in scenarios where the mass of the mediator particle that couples dark matter to the Standard Model is larger than the reheat temperature, T RH , in the early Universe.
Evan Frangipane   +2 more
doaj   +1 more source

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