Results 11 to 20 of about 2,678 (202)

Search for Electric Dipole Moments and Axions/ALPS with Polarized Beams in Storage RIngs [PDF]

open access: goldProceedings of 20th International Workshop on Polarized Source, Targets, and Polarimetry — PoS(PSTP2024)
The research investigates two main questions in particle physics and cosmology: the fate of antimatter after the Big Bang and the nature of Dark Matter (DM). It focuses on studying Electric Dipole Moments (EDMs) in particles like protons and deuterons using polarized particle beams in a storage ring.
P. Lenisa   +3 more
openalex   +3 more sources

Audible axions

open access: yesJournal of High Energy Physics, 2019
Conventional approaches to probing axions and axion-like particles (ALPs) typically rely on a coupling to photons. However, if this coupling is extremely weak, ALPs become invisible and are effectively decoupled from the Standard Model. Here we show that
Camila S. Machado   +3 more
doaj   +3 more sources

New bounds on axion-like particles from MicroBooNE

open access: yesJournal of High Energy Physics, 2022
Neutrino experiments lie at the edge of the intensity frontier and therefore can be exploited to search for new light particles weakly coupled to the visible sector.
Pilar Coloma   +2 more
doaj   +1 more source

Hilbert series for ALP EFTs

open access: yesJournal of High Energy Physics, 2023
Axions and axion-like particles (ALPs) are ubiquitous in popular attempts to solve supercalifragilisticexpialidocious puzzles of Nature. A widespread and vivid experimental programme spanning a vast range of mass scales and decades of couplings strives ...
Christophe Grojean   +2 more
doaj   +1 more source

A global analysis of axion-like particle interactions using SMEFT fits

open access: yesJournal of High Energy Physics, 2023
In the presence of axions or axion-like particles (ALPs) that couple to the Standard Model via dimension-five interactions, dimension-six SMEFT interactions are generated via renormalization-group evolution.
Anke Biekötter   +3 more
doaj   +1 more source

Axion couplings in grand unified theories

open access: yesJournal of High Energy Physics, 2022
We show that the couplings of axions to gauge bosons are highly restricted in Grand Unified Theories where the standard model is embedded in a simple 4D gauge group.
Prateek Agrawal, Michael Nee, Mario Reig
doaj   +1 more source

Anomaly-free axion dark matter in three Higgs doublet model and its phenomenological implications

open access: yesJournal of High Energy Physics, 2022
We study phenomenological implications of an axion that arises as a pseudo Nambu-Goldstone boson due to the spontaneous breaking of anomaly-free global flavor symmetry.
Kodai Sakurai, Fuminobu Takahashi
doaj   +1 more source

Naturally astrophobic QCD axion

open access: yesJournal of High Energy Physics, 2023
We present a QCD axion model where the couplings of the axion to nucleons, electrons, and muons are naturally suppressed because of the appropriate choice of the Peccei-Quinn charges of the Standard Model fermions.
Marcin Badziak, Keisuke Harigaya
doaj   +1 more source

Flavourful axion phenomenology

open access: yesJournal of High Energy Physics, 2018
We present a comprehensive discussion of the phenomenology of flavourful axions, including both standard Peccei-Quinn (PQ) axions, associated with the solution to the strong CP problem, and non-standard axion-like particles (ALPs). We give the flavourful
Fredrik Björkeroth   +2 more
doaj   +1 more source

Axion-meson mixing in light of recent lattice η–η′ simulations and their two-photon couplings within U(3) chiral theory

open access: yesJournal of High Energy Physics, 2023
We study the mixing of the QCD/QCD-like axion and light-flavor mesons π 0, η, η′ within the framework of U(3) chiral perturbation theory up to next-to-leading order in this work. The axion-meson mixing formulas are calculated order by order in the U(3) δ-
Rui Gao   +3 more
doaj   +1 more source

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