Sterile neutrino searches at future $e^-e^+$, $pp$, and $e^-p$ colliders
, 2016 Sterile neutrinos are among the most attractive extensions of the SM to generate the light neutrino masses observed in neutrino oscillation experiments.
Antusch, Stefan +2 more
core +1 more source
Long-lived heavy neutral leptons from mesons in effective field theory
Journal of High Energy Physics, 2023 In the framework of the low-energy effective field theory of the Standard Model extended with heavy neutral leptons (HNLs), we calculate the production rates of HNLs from meson decays triggered by dimension-six operators.
Rebeca Beltrán +5 more
doaj +1 more source
New Clues about light sterile neutrinos: preference for models with damping effects in global fits
Journal of High Energy Physics, 2023 This article reports global fits of short-baseline neutrino data to oscillation models involving light sterile neutrinos. In the commonly-used 3+1 plane wave model, there is a well-known 4.9σ tension between data sets sensitive to appearance versus ...
J. M. Hardin +7 more
doaj +1 more source
Searches for a Heavy Sterile Neutrino $N$ profit from precise predictions of inclusive decay rates, entering predictions for branching fractions and lifetime. Once decay channels into semi-hadronic final states are open, a reliable calculation of inclusive decay rates is only possible if $N$ is heavy enough to permit a perturbative calculation.
Kretz, Tim, Nierste, Ulrich
openaire +2 more sources
Extended double seesaw model for neutrino mass spectrum and low scale leptogenesis
, 2007 We consider a variant of seesaw mechanism by introducing extra singlet neutrinos, with which we show how the low scale leptogenesis is realized without imposing the tiny mass splitting between two heavy Majorana neutrinos required in the resonant ...
Asaka +26 more
core +1 more source
Testing sterile neutrino extensions of the Standard Model at future lepton colliders [PDF]
, 2015 Extending the Standard Model (SM) with sterile ('right-handed') neutrinos is one of the best motivated ways to account for the observed neutrino masses. We discuss the expected sensitivity of future lepton collider experiments for probing such extensions.
Antusch, Stefan, Fischer, Oliver
core +3 more sources
Impact of unitarity violation on sensitivity of the leptonic CP phase at Hyper-Kamiokande and DUNE
Journal of High Energy PhysicsWe study the impact of unitarity violation on the sensitivity of the leptonic CP phase, δ CP, considering the next generation of long-baseline neutrino experiments, Hyper-Kamiokande and DUNE.
Ana Maria Garcia Trzeciak +2 more
doaj +1 more source
Breaking Be: a sterile neutrino solution to the cosmological lithium problem
, 2016 The possibility that the so-called "lithium problem", i.e. the disagreement between the theoretical abundance predicted for primordial $^7$Li assuming standard nucleosynthesis and the value inferred from astrophysical measurements, can be solved through ...
Gerbino, Martina +4 more
core +1 more source
Neutrino Physics in the Frontiers of Intensities and Very High Sensitivities 2018
, 2019 Advances in High Energy Physics, Volume 2019, Issue 1, 2019.
Theocharis Kosmas +2 more
wiley +1 more source
Investigating DUNE oscillations sensitivity to sterile pseudo-Dirac neutrinos
Journal of High Energy PhysicsWe explore the sensitivity of the Deep Underground Neutrino Experiment (DUNE) to sterile neutrino oscillations within a 3+(pseudo-Dirac pair) framework. We first consider a pair of two sterile neutrinos forming a pseudo-Dirac pair, then we consider a low-
Asmaa Abada +2 more
doaj +1 more source