Results 31 to 40 of about 4,135 (229)
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
Post-inflationary axions: a minimal target for axion haloscopes [PDF]
Journal of High Energy Physics, 2022 An axion-like-particle (ALP) in the post-inflationary scenario with domain wall number N > 1 can be dark matter if the residual ℤ_ N symmetry has a small explicit breaking. Although we cannot determine the full dynamics of the system reliably, we provide
Marco Gorghetto, Edward Hardy
semanticscholar +1 more source
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
doaj +1 more source
ALPs and heavy hadron chiral perturbation theory [PDF]
Physical Review D, 2022 Axion Like Particles (ALPs) belong to a well motivated class of particles which are part of a more complete UV theory. In this work, we initiate and present the inclusion of such ALPs or the conventional axions in the Heavy Hadron Chiral Perturbation ...
N. Mahajan
semanticscholar +1 more source
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
doaj +1 more source
Solar axions in large extra dimensions [PDF]
Journal of Cosmology and Astroparticle Physics, 2021 The axion could be used as a probe for extra dimensions. In large extra dimensions, besides the QCD axion one obtains an infinite tower of massive Kaluza-Klein (KK) states. We describe the processes of KK axions production in the Sun via the axion-photon
M. Bastero-Gil +2 more
semanticscholar +1 more source
Axions from neutron star mergers [PDF]
Physical Review D, 2021 Axion-like particles (ALP) can in principle be produced in very hot and dense astrophysical environments, escape from the extreme object where such conditions are met, and then be converted in gamma–rays in the magnetic fields intervening between the ...
D. Fiorillo, F. Iocco
semanticscholar +1 more source
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
doaj +1 more source
Round Table on Axions and Axion-like Particles [PDF]
Proceedings of XIII Quark Confinement and the Hadron Spectrum — PoS(Confinement2018), 2019 In this contribution, based on the discussion at a round table of the XIII Quark Confinement and the Hadron Spectrum - Confinement conference, we review the main properties of the QCD axion and, more generally, of axion-like particles and their relevance
P. Vecchia +3 more
semanticscholar +1 more source
Axions: From magnetars and neutron star mergers to beam dumps and BECs [PDF]
, 2021 We review topics in searches for axion-like-particles (ALPs), covering material that is complementary to other recent reviews. The first half of our review covers ALPs in the extreme environments of neutron star cores, the magnetospheres of highly ...
J. Fortin +5 more
semanticscholar +1 more source