Results 91 to 100 of about 6,824 (208)

Heavy sterile neutrinos and the MiniBooNE anomaly

, 2019
Presentation from Neutrino Platform Week 2019: Hot Topics in Neutrino Physics, CERN, 7-11 October ...
openaire   +1 more source

Phenomenology of light sterile neutrinos [PDF]

, 2017
Several anomalies recorded in short-baseline neutrino experiments suggest the possibility that the standard 3-flavor framework may be incomplete and point towards a manifestation of new physics.
Antonio Palazzo, PALAZZO, ANTONIO, Palazzo, A.   +2 more
core   +1 more source

Searching for heavy neutral leptons coupled to axion-like particles at the LHC far detectors and SHiP

Journal of High Energy Physics
In hidden-sector models, axion-like particles (ALPs) can couple to heavy neutral leptons (HNLs), leading to rich phenomenologies. We study ALPs produced from D- and B-meson decays via quark-flavor-violating couplings, and decaying exclusively into a pair
Zeren Simon Wang, Yu Zhang, Wei Liu
doaj   +1 more source

Searching for heavy sterile neutrinos in kaon decays

, 2017
We present here a study of the impact of a heavy neutrino (or heavy neutral lepton) on leptonic and semileptonic kaon decays. We used a simplified model consisting of 3 light neutrinos responsible for neutrino oscillations and a heavy sterile neutrino. We found that it can lead to large deviations from the Standard Model predictions for leptonic decays,
openaire   +2 more sources

Bounding the Dimension-5 Seesaw Portal with non-pointing photon searches

Journal of High Energy Physics
The addition of d = 5 operators to the Seesaw model leads to the Dimension-5 Seesaw Portal. Here, two new operators provide interactions for the heavy sterile neutrinos.
L. Duarte, J. Jones-Pérez, C. Manrique-Chavil   +2 more
doaj   +1 more source

BBN and sterile neutrinos

, 2007
Big Bang Nucleosynthesis restrictions on mixing of active neutrinos with possible sterile ones are obtained with the account of experimentally determined mixing between all active ...
VILLANTE, FRANCESCO LORENZO
core   +1 more source

Light sterile neutrinos: models and phenomenology

, 2011
Motivated by recent hints in particle physics and cosmology, we study the realization of eV-scale sterile neutrinos within both the seesaw mechanism and flavor symmetry theories.
Barry, J., He Zhang, Rodejohann, W., Zhang, H., Werner Rodejohann, James Barry   +5 more
core   +1 more source

Extending the sensitivity of heavy sterile neutrino searches with solar neutrino experiments

9 pages, 12 ...
Zhu, Yutao, Fu, Haoyang, Luo, Wentai, Chen, Shaomin, Yang, Litao, Zhang, Zhicai   +5 more
openaire   +2 more sources

Shadow dark matter, sterile neutrinos and neutrino events at IceCube

, 2015
The excess of high energy neutrinos observed by the Ice Cube collaboration might originate from baryon number violating decays of heavy shadow baryons from dark mirror sector which produce shadow neutrinos.
BEREJIANI, ZOURAB, Zurab Berezhiani
core   +1 more source

Freeze-in leptogenesis with sterile neutrino self-interactions

Journal of High Energy Physics
Sterile neutrinos are a simple yet compelling addition to the Standard Model. For right-handed neutrinos with masses below the electroweak scale, leptogenesis can proceed through CP-violating oscillations of the sterile neutrinos. This is known as ARS or
María Dias Astros, Stefan Vogl
doaj   +1 more source