Results 11 to 20 of about 6,824 (208)
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 +2 more sources
Dynamical Minimal Flavour Violating inverse seesaw
Journal of High Energy Physics, 2022 The Inverse Seesaw mechanism is dynamically realised within the Minimal Lepton Flavour Violation context. Lepton number, whose breaking is spontaneously realised, is generalised to a global Abelian factor of the whole flavour symmetry, that also plays ...
Fernando Arias-Aragón +3 more
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Right-handed Dirac and Majorana neutrinos at Belle II
Journal of High Energy Physics, 2023 We assess the ability of the Belle II experiment to probe the Dirac or Majorana nature of a massive right-handed neutrino (RHN) N in the MeV to GeV mass range.
Tao Han +3 more
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More ingredients for an Altarelli cocktail at MiniBooNE
Journal of High Energy Physics, 2023 The MiniBooNE excess persists as a significant puzzle in particle physics. Given that the MiniBooNE detector cannot discriminate between electron-like signals and backgrounds due to photons, the goal of this work is to study photon backgrounds in ...
Kevin J. Kelly, Joachim Kopp
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Search for heavy Majorana neutrinos in the τ final state at proton-electron colliders
Journal of High Energy Physics, 2023 We utilize the lepton number violation signal process p e − → τ + jjj to search for heavy Majorana neutrinos at future proton-electron colliders. The LHeC (FCC-eh) is considered to run with an electron beam energy of 60 GeV, a proton beam energy of 7 (50)
Haiyong Gu +3 more
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Matter effects of sterile neutrino in light of renormalization-group equations
Journal of High Energy Physics, 2022 The renormalization-group equation (RGE) approach to neutrino matter effects is further developed in this work. We derive a complete set of differential equations for effective mixing elements, masses and Jarlskog-like invariants in presence of a light ...
Shuge Zeng, Fanrong Xu
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Higher Flavor Symmetries in the Standard Model
Annalen der Physik, Volume 535, Issue 8, August 2023., 2023 The Standard Model enjoys a higher‐group symmetry which mixes the zero‐form flavor symmetries with the one‐form magnetic hyper charge symmetry. This structure greatly restricts the possible flavor symmetries that may remain unbroken in any ultraviolet completion that includes magnetic monopoles.
Clay Córdova, Seth Koren
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The Low‐Scale Seesaw Solution to the MW$M_W$ and (g−2)μ$(g-2)_\umu$ Anomalies
Fortschritte der Physik, Volume 71, Issue 4-5, May 2023., 2023 Abstract The recent CDF‐II measurement of the W‐boson mass shows a strong tension with the corresponding Standard Model prediction. Once active neutrino masses are explained in the context of the Low‐Scale Seesaw mechanisms, this tension can be resolved.
Arturo de Giorgi +2 more
wiley +1 more source
Sterile neutrinos: propagation in matter and sensitivity to sterile mass ordering
Journal of High Energy Physics, 2023 We analytically calculate the neutrino conversion probability P μe in the presence of sterile neutrinos, with exact dependence on ∆ m 41 2 $$ \Delta {m}_{41}^2 $$ and with matter effects explicitly included.
Dibya S. Chattopadhyay +5 more
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Probing HNL‐ALP Couplings at Colliders
Fortschritte der Physik, Volume 71, Issue 4-5, May 2023., 2023 Abstract Axion‐like particles (ALPs) and heavy neutral leptons (HNLs) are both well‐motivated extensions of the Standard Model. As ALPs couple to on‐shell fermions proportionally to their masses, processes involving both types of particles may give rise, for TeV HNLs, to relevant phenomenology at colliders.
Arturo de Giorgi +2 more
wiley +1 more source