Results 31 to 40 of about 862 (207)

Axion quality problem: keep calm and baryon

Journal of High Energy Physics
Axion models generically suffer from a severe quality problem when coupled to gravity. In this article we provide a very simple model with a high quality axion.
Prateek Agrawal, Anson Hook, Vazha Loladze, Mario Reig   +3 more
doaj   +1 more source

The photophobic ALP

Journal of High Energy Physics, 2018
We explore models and phenomenology of a photophobic axion-like particle (ALP), an axion whose coupling to photons is maximally suppressed without fine-tuning of the underlying parameters.
Nathaniel Craig, Anson Hook, Skyler Kasko   +2 more
doaj   +1 more source

Origin, evolution and biogeographic dynamics of the European rabbit (Oryctolagus cuniculus) in Southwestern Europe

The Anatomical Record, EarlyView.
Abstract The Pleistocene is a key period for understanding the evolutionary history and palaeobiogeography of the European rabbit (Oryctolagus cuniculus). The species was first documented in southeastern Iberia at the beginning of the Middle Pleistocene and appears to have rapidly spread throughout Southwestern Europe, where it was found in numerous ...
Maxime Pelletier
wiley   +1 more source

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

Cosmological limits on axions and axion-like particles [PDF]

, 2012
The axion is a pseudo-Nambu-Goldstone boson. It appears after the spontaneous breaking of the Peccei-Quinn symmetry, which was proposed to solve the strong-CP problem.
Cadamuro, Davide
core   +1 more source

Composite ALPs in Composite Higgs Models

Journal of High Energy Physics
We study the effective Lagrangian for the Axion-Like Particle (ALP) arising in a class of composite Higgs models. We discuss the peculiarities of the coupling to the quark sector specific of these models, including flavor violating terms.
Gabriele Ferretti
doaj   +1 more source

Axion couplings to electroweak gauge bosons

European Physical Journal C: Particles and Fields, 2019
We determine the model-independent component of the couplings of axions to electroweak gauge bosons, induced by the minimal coupling to QCD inherent to solving the strong CP problem.
G. Alonso-Álvarez, M. B. Gavela, P. Quilez   +2 more
doaj   +1 more source

A talus rock glacier in Nantlle Valley, North Wales

Journal of Quaternary Science, EarlyView.
ABSTRACT Landforms comprising mixtures of fine and coarse sediment and deposited during late glacial times are ubiquitous in the British mountains. In many cases, their interpretation has often proved contentious; as a result, the non‐generic term discrete debris accumulations (DDA) has been used to describe them and, over the last 50 years, some have ...
Stephan Harrison, Ed Anderson
wiley   +1 more source

Holocene vegetation change and fire–plant diversity shifts in Mediterranean France

Journal of Quaternary Science, EarlyView.
ABSTRACT Changes in fire activity are recognized as a major threat to biodiversity and vegetation communities across the Mediterranean Basin. However, long‐term fire–vegetation interactions remain poorly investigated. Here, we combine a high‐resolution charcoal record with pollen data from the “Étang des Aulnes” lake (southern France) to reconstruct ...
Cécile Latapy, Marion Lestienne, Andy Hennebelle, Johanne Burmeister, Aymeric LeGall, Gwendal Mouden, Damien Rius, Lisa Bajolle, Jacques‐Louis de Beaulieu, Walter Finsinger, Emmanuel Gandouin, François Demory, Cécile H. Albert, Bérangère Leys   +13 more
wiley   +1 more source

Neutrino mixing angle and neutrino oscillation in ALPs matter

, 2023
Axions and axion-like particles (ALPs) are among of the most popular candidates for dark matter. Axions are also considered as new physics contributions to the muon g-2. Following the existed interest to ALPs we consider interaction between neutrinos and
Lichkunov, Alexey, Studenikin, Alexander
core