Results 71 to 80 of about 161,169 (272)
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
Journal of High Energy PhysicsRecently, the Belle II collaboration announced the first measurement of the branching ratio B B + → K + ν ν ¯ $$ \mathcal{B}\left({B}^{+}\to {K}^{+}\nu \overline{\nu}\right) $$ , which is found to be about 2.7σ higher than the Standard Model (SM ...
Biao-Feng Hou +4 more
doaj +1 more source
Polarization observables in lepton-deuteron elastic scattering including the lepton mass
, 2014 Expressions for the unpolarized differential cross section and for various polarization observables in the lepton-deuteron elastic scattering, $\ell+D\to \ell+D$, $\ell=e$, $\mu$, $\tau$, have been obtained in one-photon-exchange approximation, taking ...
Gakh, A. G. +2 more
core +3 more sources
An Algebraic Roadmap of Particle Theories
Annalen der Physik, Volume 537, Issue 4, April 2025.The SO(10) grand unified theory, the Georgi–Glashow SU(5) grand unified theory, the Pati–Salam model, the Left–Right Symmetric model, and the Standard model have been studied extensively since the 1970s. Recasting these models in a division algebraic language elucidates how they are each in fact connected.
Nichol Furey
wiley +1 more source
Potential analysis of holographic Schwinger effect in the magnetized background
European Physical Journal C: Particles and Fields, 2020 We study the holographic Schwinger effect with magnetic field at RHIC and LHC energies by using the AdS/CFT correspondence. We consider both weak and strong magnetic field cases with $$B\ll T^2$$ B≪T2 and $$B\gg T^2$$ B≫T2 solutions respectively. Firstly,
Zhou-Run Zhu, De-fu Hou, Xun Chen
doaj +1 more source
Quark Mixing Matrix Studies and Lepton Flavor Violation Searches Using Rare Decays of Kaons [PDF]
, 2000 I review recent results from experiments on rare decays of kaons, concentrating on searches for lepton flavor violation (LFV) and on measurements of quark mixing (CKM) matrix elements. The LFV results are the culmination of 15 years of experimentation at
J., V., Valencia G., WILLIAM MOLZON
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Exploring Dark Photon Production and Kinetic Mixing Constraints in Heavy‐Ion Collisions
Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.ABSTRACT Vector U‐bosons, often referred to as “dark photons,” are potential candidates for mediating dark matter interactions. In this study, we outline a procedure to derive theoretical constraints on the upper bound of the kinetic mixing parameter ϵ2MU$$ {\upvarepsilon}^2\left({M}_U\right) $$ using dilepton data from heavy‐ion from SIS to RHIC ...
Adrian William Romero Jorge +3 more
wiley +1 more source
Parametrized leptogenesis from linear seesaw
European Physical Journal C: Particles and Fields, 2020 We present a purely linear seesaw mechanism in a mirror left-right symmetric framework and then realize a novel leptogenesis scenario for parametrizing the cosmic baryon asymmetry by the charged lepton masses, the light Majorana neutrino mass matrix and ...
Pei-Hong Gu
doaj +1 more source
Double-lepton polarization asymmetries in the (B -> K l^+ l^-) decay beyond the Standard Model
, 2003 General expressions for the double-lepton polarizations in the (B -> K l^+ l^-) decay are obtained, using model independent effective Hamiltonian, including all possible interactions.
66 +17 more
core +1 more source
Gauge dilution and leptogenesis [PDF]
, 1999 In this paper, we examine how gauge interactions can dilute the lepton asymmetry in lepton induced baryogenesis.
Carlier, S. +2 more
core +2 more sources