Results 51 to 60 of about 1,008 (140)

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

Constraining the SMEFT extended with sterile neutrinos at FCC-ee

Journal of High Energy Physics
We investigate how extensions of the Standard Model (SM) involving heavy neutral leptons (HNLs) can be probed at FCC-ee, the proposed high-energy circular e + e − collider.
Patrick D. Bolton, Frank F. Deppisch, Suchita Kulkarni, Chayan Majumdar, Wenna Pei   +4 more
doaj   +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

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

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

Heavy neutral leptons and top quarks in effective field theory

Journal of High Energy Physics
We study the phenomenology of heavy neutral leptons (HNLs) at the LHC in effective field theory, concentrating on d = 6 operators with top quarks.
Rebeca Beltrán, Giovanna Cottin, Julian Günther, Martin Hirsch, Arsenii Titov, Zeren Simon Wang   +5 more
doaj   +1 more source

Exotic sterile neutrinos and pseudo-Goldstone phenomenology

Journal of High Energy Physics, 2019
We study the phenomenology of a light (GeV scale) sterile neutrino sector and the pseudo-Goldstone boson (not the majoron) associated with a global symmetry in this sector that is broken at a high scale.
Bibhushan Shakya, James D. Wells
doaj   +1 more source

New physics searches using ProtoDUNE and the CERN SPS accelerator

Journal of High Energy Physics
The exquisite capabilities of liquid Argon Time Projection Chambers make them ideal to search for weakly interacting particles in Beyond the Standard Model scenarios.
Pilar Coloma, Jacobo López-Pavón, Laura Molina-Bueno, Salvador Urrea   +3 more
doaj   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

Second leptogenesis: Unraveling the baryon-lepton asymmetry discrepancy

Journal of High Energy Physics
We propose a novel scenario to explain the matter-antimatter asymmetry by twofold leptogenesis, wherein heavy Majorana neutrinos exhibit temperature-dependent masses and engage in CP-violating decays.
YeolLin ChoeJo, Kazuki Enomoto, Yechan Kim, Hye-Sung Lee   +3 more
doaj   +1 more source