Results 11 to 20 of about 504 (172)
Predictions for axion couplings from ALP cogenesis [PDF]
Journal of High Energy Physics, 2021 Abstract Adding an axion-like particle (ALP) to the Standard Model, with a field velocity in the early universe, simultaneously explains the observed baryon and dark matter densities. This requires one or more couplings between the ALP and photons, nucleons, and/or electrons that are predicted as functions of the ALP mass.
Raymond T. Co +2 more
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A global analysis of axion-like particle interactions using SMEFT fits
Journal 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
Journal 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
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New bounds on axion-like particles from MicroBooNE
Journal 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
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Naturally astrophobic QCD axion
Journal 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
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Journal 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
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Anomaly-free axion dark matter in three Higgs doublet model and its phenomenological implications
Journal 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
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Axion couplings in grand unified theories
Journal 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
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Flavourful axion phenomenology
Journal 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
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The quest for an intermediate-scale accidental axion and further ALPs [PDF]
Journal of High Energy Physics, 2014 La détection récente de l'expérience du polarimètre de fond cosmologique à micro-ondes BICEP2 des fluctuations des tenseurs dans le spectre de puissance en mode B exclut fondamentalement tous les modèles d'axions plausibles où sa constante de désintégration est supérieure à $ 10^{13}$ GeV.
Alex G. Dias +4 more
openaire +5 more sources