Results 1 to 10 of about 2,678 (202)
The Quest for an Intermediate-Scale Accidental Axion and Further ALPs [PDF]
Journal of High Energy Physics, 2014 The recent detection of the cosmic microwave background polarimeter experiment BICEP2 of tensor fluctuations in the B-mode power spectrum basically excludes all plausible axion models where its decay constant is above $10^{13}$ GeV.
Dias, A. G. +4 more
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The low-energy effective theory of axions and ALPs [PDF]
Journal of High Energy Physics, 2021 Abstract Axions and axion-like particles (ALPs) are well-motivated low-energy relics of high-energy extensions of the Standard Model, which interact with the known particles through higher-dimensional operators suppressed by the mass scale Λ of the new-physics sector.
Martin Bauer +4 more
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Aspects of Axions and ALPs Phenomenology [PDF]
Journal of Physics: Conference Series, 2023 Abstract The physics of axions and axion-like particles (ALPs) is enjoying an incredibly productive period, with many new experimental proposals, theoretical idea, and original astrophysical and cosmological arguments which help the search effort.
Maurizio Giannotti
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Supernova Muons: New Constraints on Z′ Bosons, Axions and ALPs [PDF]
Journal of High Energy Physics, 2021 Abstract New light particles produced in supernovae can lead to additional energy loss and a consequent deficit in neutrino production in conflict with the neutrinos observed from Supernova 1987A (SN1987A). Contrary to the majority of previous SN1987A studies, we examine the impact of Z′ bosons, axions, and axion-like particles ...
Djuna Croon +3 more
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Axions and ALPs: a very short introduction [PDF]
, 2017 Published by Verlag Deutsches Elektronen-Synchrotron ...
David J. E. Marsh
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Intermediate Scale Accidental Axion and ALPs [PDF]
, 2014 We discuss the problem of constructing models containing an axion and axion-like particles, motivated by astrophysical observations, with decay constants at the intermediate scale ranging from $10^9$GeV to $10^{13}$GeV. We present examples in which the axion and axion-like particles arise accidentally as pseudo Nambu-Goldstone bosons of automatic ...
Alex G. Dias
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Searching for axions and ALPs from string theory [PDF]
Journal of Physics: Conference Series, 2014 We review searches for closed string axions and axion-like particles (ALPs) in IIB string flux compactifications. For natural values of the background fluxes and TeV scale gravitino mass, the moduli stabilisation mechanism of the LARGE Volume Scenario predicts the existence of a QCD axion candidate with intermediate scale decay constant, f_a ~ 10^9 ...
Andreas Ringwald
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Alternative dark matter candidates: axions and ALPs [PDF]
Proceedings of Neutrino Oscillation Workshop — PoS(NOW2018), 2019 The QCD axion and particles with similar properties (axion-like particles or ALPs) are excellent candidates to be the cold dark matter of the Universe. They are extremely different to the standard WIMP, however. In this talk I presented and highlighted the mostly shocking aspects of axion dark matter, the prospects for its discovery and the recent ...
Javier Redondo
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Journal of High Energy Physics, 2023 The Effective Field Theory (EFT) Lagrangian for a generic axion-like particle (ALP) has many free parameters, and leaves quite some freedom for the expected phenomenology.
Fernando Arias-Aragón +2 more
doaj +2 more sources
Production and Detection of Axion-Like Particles in a HERA Dipole Magnet - Letter-of-Intent for the ALPS experiment - [PDF]
, 2007 Recently, the PVLAS collaboration has reported evidence for an anomalous rotation of the polarization of light in vacuum in the presence of a transverse magnetic field. This may be explained through the production of a new light spin-zero (axion-like) neutral particle coupled to two photons.
Klaus Ehret +8 more
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