Results 81 to 90 of about 211,027 (308)
Primordial Lepton Family Asymmtries in Seesaw Model
, 2003 In leptogenesis scenario, the decays of heavy Majorana neutrinos generate lepton family asymmetries, $Y_e, Y_{\mu}$ and $Y_{\tau}$. They are sensitive to CP violating phases in seesaw models.
Jung, T. Endoh, T. Morozumi, Z. Xiong
core +1 more source
Lepton flavor violation and local lepton number
Physical Review DWe investigate the predictions for lepton number violating processes within the minimal theory of neutrino masses based on the spontaneous breaking of local lepton number. In this framework, the symmetry is broken at the low scale, leading to the existence of a viable dark matter candidate.
Hridoy Debnath, Pavel Fileviez Pérez
openaire +2 more sources
Modular invariant models of lepton masses at levels 4 and 5 [PDF]
Journal of High Energy Physics, 2019 We explore alternative descriptions of the charged lepton sector in modular invariant models of lepton masses and mixing angles. In addition to the modulus, the symmetry breaking sector of our models includes ordinary flavons.
J. C. Criado, F. Feruglio, S. King
semanticscholar +1 more source
Berichte zur Wissenschaftsgeschichte, Volume 48, Issue 1-2, Page 143-162, August 2025.Abstract Short‐lived, unobservable, and not subject to the usual rules of conservation of energy and momentum, virtual particles—an integral part of the conceptual framework of quantum field theory (QFT)—exhibit a number of curious characteristics which, in recent decades, have in part fueled important discussions about their ontological status ...
Jean‐Philippe Martinez
wiley +1 more source
New leptons and old lepton numbers
Nuclear Physics B, 1976 Abstract We discuss, within the framework of SU(2) × U(1) gauge theories, possible relationships between the new leptons and the old ones. The importance of the radiative decays U− → e−γ and U− → μ−γ in experimentally determining these relationships is stressed.
F. Wilczek, A. Zee
openaire +2 more sources
Lepton asymmetry and the cosmic QCD transition
, 2009 We study the influence of lepton asymmetry on the evolution of the early Universe. The lepton asymmetry $l$ is poorly constrained by observations and might be orders of magnitude larger than the baryon asymmetry $b$, $|l|/b \leq 2\times 10^8$.
+13 more
core +1 more source
Physics Letters B, 1996 It is assumed that three lepton families $( _e, e)$, $( _ , )$, $( _ , )$ carry charges, which are sources of electronic, muonic and tauonic massless vector particles, respectively. Various manifestations of these hypothetical photons are discussed.
openaire +2 more sources
Scaling of lepton dipole moments with lepton mass [PDF]
Physical Review D, 2001 19 pages with 5 ...
Babu, K.S. +2 more
openaire +3 more sources
A4 lepton flavor model and modulus stabilization from S4 modular symmetry [PDF]
Physical Review D, 2019 We study the modulus stabilization in an ${A}_{4}$ model whose ${A}_{4}$ flavor symmetry is originated from the ${S}_{4}$ modular symmetry. We can stabilize the modulus so that the ${A}_{4}$ invariant superpotential leads to the realistic lepton masses ...
Tatsuo C. Kobayashi +4 more
semanticscholar +1 more source
Nonconventional Techniques in Plant Alkaloid Extraction: A Decade of Progress (2014–2023)
Chemistry &Biodiversity, Volume 22, Issue 8, August 2025.This figure seeks to represent the evolution of the different unconventional approaches that were adopted for the extraction of plant‐derived alkaloids during the decade from 2014 to 2023. ABSTRACT Plant metabolism encompasses primary and secondary pathways, with secondary metabolism yielding diverse natural products crucial for plant adaptation and ...
Victor Menezes Sipoloni +5 more
wiley +1 more source