Results 41 to 50 of about 9,015 (168)

HNL mass degeneracy: implications for low-scale seesaws, LNV at colliders and leptogenesis

Journal of High Energy Physics, 2023
Low-scale seesaw variants protected by lepton number symmetry provide a natural explanation of the smallness of neutrino masses but, unlike their higher-scale counterparts, with potentially testable phenomenology.
Enrique Fernández-Martínez, Xabier Marcano, Daniel Naredo-Tuero   +2 more
doaj   +1 more source

Heavy neutral leptons at muon colliders

Journal of High Energy Physics, 2023
The future high-energy muon colliders, featuring both high energy and low background, could play a critical role in our searches for new physics. The smallness of neutrino mass is a puzzle of particle physics.
Peiran Li, Zhen Liu, Kun-Feng Lyu
doaj   +1 more source

Impact of eV-mass sterile neutrinos on neutrino-driven supernova outflows

, 2012
Motivated by recent hints for sterile neutrinos from the reactor anomaly, we study active-sterile conversions in a three-flavor scenario (2 active + 1 sterile families) for three different representative times during the neutrino-cooling evolution of the
A.J.T. Poelarends, B. Dasgupta, B.A. Reid, E. Aver, G. Martínez-Pinedo, G. Worthey, G.C. McLaughlin, G.L. Fogli, G.L. Fogli, Georg G Raffelt, H. Duan, Hans-Thomas Janka, Irene Tamborra, J. Hamann, J.M. Fetter, L. Hüdepohl, Lorenz Hüdepohl, M.T. Keil, S. Mikheev, S. Mikheev, S. Sarikas, S. Wanajo, Y. Izotov, Y. Qian, Y. Suwa, Z. Hou   +25 more
core   +1 more source

Search for Heavy Sterile Neutrinos in Trileptons at the LHC [PDF]

, 2017
We present a search strategy for both Dirac and Majorana sterile neutrinos from the purely leptonic decays of $W^\pm \to e^\pm e^\pm \mu^\mp \nu$ and $\mu^\pm \mu^\pm e^\mp \nu$ at the 14 TeV LHC.
Dib, Claudio O., Kim, C. S., Wang, Kechen   +2 more
core   +1 more source

Investigating the Sterile Neutrino Parameters with QLC in 3 + 1 Scenario

Advances in High Energy Physics, Volume 2019, Issue 1, 2019., 2019
In the scenario with four generation quarks and leptons and using a 3 + 1 neutrino model having one sterile and the three standard active neutrinos with a 4 × 4 unitary transformation matrix, UPMNS4, we perform a model‐based analysis using the latest global data and determine bounds on the sterile neutrino parameters i.e., the neutrino mixing angles ...
Gazal Sharma, B. C. Chauhan, Sally Seidel   +2 more
wiley   +1 more source

Constraining the Effective Mass of Majorana Neutrino with Sterile Neutrino Mass for Inverted Ordering Spectrum

Advances in High Energy Physics, Volume 2019, Issue 1, 2019., 2019
Inspired by the experimental anomalies in neutrino physics and recent oscillation data from short baseline and another neutrino experiment, the realization of one extra neutrino flavor seems to be favoring. This extra flavor may change the observable, |mββ|, of current data taking and next‐generation (ββ) 0ν‐decay experiments aim to probe and possibly ...
Jaydip Singh, Sally Seidel
wiley   +1 more source

Emergent neutrinos from heavy messengers

Journal of High Energy Physics, 2022
Fermionic bound states (mesinos) of messengers can play the role of right-handed neutrinos and due to their heavy masses they can realize the seesaw mechanism providing light and heavy sterile neutrinos.
Pascal Anastasopoulos, Elias Kiritsis
doaj   +1 more source

A Superalgebra Within: Representations of Lightest Standard Model Particles Form a Z25$\mathbb {Z}_2^5$‐Graded Algebra

Annalen der Physik, Volume 537, Issue 12, December 2025.
 A set of particle representations, familiar from the Standard Model, collectively form a superalgebra. Those representations mirroring the behaviour of the Standard Model's gauge bosons, and three generations of fermions, are each included in this algebra, with exception only to those representations involving the top quark.
N. Furey
wiley   +1 more source

Heavy Sterile Neutrino in Dark Matter Searches

Advances in High Energy Physics, Volume 2018, Issue 1, 2018., 2018
Sterile neutrinos are possible dark matter candidates. We examine here possible detection mechanisms, assuming that the neutrino has a mass of about 50 keV and couples to the ordinary neutrino. Even though this neutrino is quite heavy, it is nonrelativistic with a maximum kinetic energy of 0.1 eV.
Paraskevi C. Divari, John D. Vergados, Athanasios Hatzikoutelis   +2 more
wiley   +1 more source

Two Micron‐Size Dark Dimensions

Fortschritte der Physik, Volume 73, Issue 8, August 2025.
Abstract Two extra dimensions of micron scale might simultaneously address the gauge and cosmological hierarchy problems. In this paper various observational bounds in scenarios with one and two large extra dimensions are examined, to see if they are compatible with the micron scale.
Luis A. Anchordoqui, Ignatios Antoniadis, Dieter Lüst   +2 more
wiley   +1 more source