Results 61 to 70 of about 9,023 (214)

Low-scale leptogenesis with three heavy neutrinos

, 2018
Leptogenesis induced by the oscillations of GeV-scale neutrinos provides a minimal and testable explanation of the baryon asymmetry of the Universe. In this work we extend previous studies invoking only two heavy neutrinos to the case of three heavy ...
Abada, Asmaa, Arcadi, Giorgio, Domcke, Valerie, Drewes, Marco, Klaric, Juraj, Lucente, Michele   +5 more
core   +4 more sources

Sterile neutrinos and right-handed currents in KATRIN [PDF]

, 2014
Kurie-plot experiments allow for neutrino-mass measurements based on kinematics in an almost model-independent manner. A future tritium-based KATRIN-like experiment can be sensitive to light sterile neutrinos with masses below 18 keV, which are among the
Barry, James, Heeck, Julian, Rodejohann, Werner   +2 more
core   +2 more sources

Probing the mixing between sterile and tau neutrinos in the SHiP experiment

Journal of High Energy Physics
We study the expected sensitivity to the mixing between sterile and tau neutrinos directly from the tau neutrino disappearance in the high-energy fixed target experiment.
Ki-Young Choi, Sung Hyun Kim, Yeong Gyun Kim, Kang Young Lee, Kyong Sei Lee, Byung Do Park, Jong Yoon Sohn, Seong Moon Yoo, Chun Sil Yoon   +8 more
doaj   +1 more source

Tree-level UV completions for N R SMEFT d = 6 and d = 7 operators

Journal of High Energy Physics, 2023
We study ultra-violet completions for operators in standard model effective field theory extended with right-handed neutrinos (N R SMEFT). Using a diagrammatic method, we generate systematically lists of possible tree-level completions involving scalars,
Rebeca Beltrán, Ricardo Cepedello, Martin Hirsch   +2 more
doaj   +1 more source

Addressing the Majorana vs. Dirac Question with Neutrino Decays

, 2018
The Majorana versus Dirac nature of neutrinos remains an open question. This is due, in part, to the fact that virtually all the experimentally accessible neutrinos are ultra-relativistic.
Balantekin, A. Baha, de Gouvêa, André, Kayser, Boris   +2 more
core   +1 more source

Neutrino Mass and Dark Matter [PDF]

, 1998
Despite direct observations favoring a low mass density, a critical density universe with a neutrino component of dark matter provides the best existing model to explain the observed structure of the universe over more than three orders of magnitude in ...
Caldwell, David O.
core   +3 more sources

Limits on active-sterile neutrino mixing parameters using heavy nuclei abundances [PDF]

, 2021
M. M. Saez, K. Fushimi, M. E. Mosquera, O. Civitarese   +3 more
openalex   +1 more source

Testing Heavy Neutral Leptons in Cosmic Ray Beam Dump experiments

Journal of High Energy Physics, 2023
In this work, we discuss the possibility to test Heavy Neutral Leptons (HNLs) using “Cosmic Ray Beam Dump” experiments. In analogy with terrestrial beam dump experiments, where a beam first hits a target and is then absorbed by a shield, we consider high-
Oliver Fischer, Baibhab Pattnaik, José Zurita   +2 more
doaj   +1 more source

Radiative Majorana neutrino masses in a parity solution to the strong CP problem

Journal of High Energy Physics
The strong CP problem is solved in Parity symmetric theories, with the electroweak gauge group containing SU(2) L × SU(2) R broken by the minimal set of Higgs fields. Neutrino masses may be explained by adding the same number of gauge singlet fermions as
Lawrence J. Hall, Keisuke Harigaya, Yogev Shpilman   +2 more
doaj   +1 more source

Searches for sterile neutrinos (and other light particles)

, 2004
Future neutrino and cosmological experiments will perform powerful searches for new light particles. After a general introduction we discuss how a new light fermion (`sterile neutrino') could manifest.Comment: 8 pages, 5 figures.
Abazajian, Alessandro Strumia, Arkani-Hamed, Barger, Bashinsky, Beacom, Beacom, Cacciapaglia, Chhacko, Cirelli, Crotty, De Gouvea, de Holanda, Hannestad, Hannestad, Ioannisian, Kopeikin, Lewis, Liddle, Maltoni, Okui, Peres, Pierpaoli, Spergel, Strumia, Strumia   +25 more
core   +1 more source