Results 21 to 30 of about 2,730 (184)

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

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, Eung Jin Chun, Stephen F. King   +2 more
doaj   +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

Axions and their Relatives [PDF]

, 2006
A review of the status of axions and axion-like particles is given. Special attention is devoted to the recent results of the PVLAS collaboration, which are in conflict with the CAST data and with the astrophysical constraints.
B. Holdom, C.A. Baker, E. Masso, E. Masso, E. Masso, E. Zavattini, G.G. Raffelt, H. Gies, J. Jaeckel, J. Preskill, J.A. Grifols, J.E. Kim, J.R. Ellis, J.T Mendonça, K. Zioutas, L. Maiani, L.B. Okun, M. Dine, P. Sikivie, R. Cameron, R. Holman, R. Kallosh, R.D. Peccei, S. Weinberg, S.L. Adler   +24 more
core   +2 more sources

Virtual axion-like particle complement to Euler-Heisenberg-Schwinger action [PDF]

, 2018
We modify action in an external electromagnetic field to include effects of virtual axion-like particle (ALP) excitations. A measurable addition to QED-Euler-Heisenberg-Schwinger (EHS) action is obtained and incorporated into experimental constraints ...
Evans, Stefan, Rafelski, Johann
core   +2 more sources

Constraining axion and ALP dark matter from misalignment during reheating

Physical Review D, 2023
We explore the phenomenology of QCD axion and axion-like particle (ALP) dark matter production via misalignment during inflationary reheating. We investigate scenarios involving inflaton oscillating in a generic potential $\sim ϕ^n$, considering inflaton decay and annihilation for reheating.
openaire   +2 more sources

Axion and ALP searches

, 2022
Axion and ALP ...
openaire   +1 more source

Signatures of axion-like particles in the spectra of TeV gamma-ray sources [PDF]

, 2007
One interpretation of the unexplained signature observed in the PVLAS experiment invokes a new axion-like particle (ALP) with a two-photon vertex, allowing for photon-ALP oscillations in the presence of magnetic fields.
A. Lindner, Alessandro Mirizzi, Georg G. Raffelt, I. McIvor, Pasquale D. Serpico   +4 more
core   +2 more sources

Axion dark matter in a $3-3-1$ model [PDF]

, 2018
Slightly extending a right-handed neutrino version of the $3-3-1$ model, we show that it is not only possible to solve the strong CP problem but also to give the total dark matter abundance reported by the Planck collaboration.
Castellanos, Ana R. Romero, Montero, J. C., Sánchez-Vega, B. L.   +2 more
core   +2 more sources

Next Generation Search for Axion and ALP Dark Matter with the International Axion Observatory

2018 IEEE Nuclear Science Symposium and Medical Imaging Conference Proceedings (NSS/MIC), 2018
More than 80 years after the postulation of dark matter, its nature remains one of the fundamental questions in cosmology. Axions are currently one of the leading candidates for the hypothetical, non-baryonic dark matter that is expected to account for about 25% of the energy density of the Universe. Especially in the light of the Large Hadron Collider
Ruz, J., Vogel, J.K., Armengaud, E., Attie, D., Basso, S., Brun, P., Bykovskiy, N., Carmona, J.M., Castel, J.F., Cebrián, S., Civitani, M., Cogollos, C., Costa, D., Dafni, T., Derbin, A.V., Descalle, M.A., Desch, K., Döbrich, B., Dratchnev, I., Dudarev, A., Ferrer-Ribas, E., Galán, J., Galanti, G., Gascón, D., Gastaldo, L., Garrido, L., Germani, C., Ghisellini, G., Giannotti, M., Giomataris, I., Gninenko, S., Golubev, N., Graciani, R., Irastorza, I.G., Jakovčić, K., Kaminski, J., Krčmar, M., Krieger, C., Lakić, B., Lasserre, T., Laurent, P., Lomskaya, I., Unzhakov, E., Limousin, O., Lindner, A., Luzón, G., Mescia, F., Miralda-Escudé, J., Mirallas, H., Muratova, V.N., Navick, X.F., Nones, C., Notari, A., Nozik, A., Núñez, A., de Solórzano, A.Ortiz, Pantuev, V., Papaevangelou, T., Pareschi, G., Picatoste, E., Pivovaroff, M.J., Perez, K., Redondo, J., Ringwald, A., Ruiz-Chóliz, E., Salvadó, J., Schiffer, T., Schmidt, S., Schneekloth, U., Schott, M., Silva, H., Tagliaferri, G., Tavecchio, F., ten Kate, H., Tkackev, I., Troitsky, S., Vedrine, P., Weltman, A.   +77 more
openaire   +5 more sources