Results 101 to 110 of about 172,277 (268)
Probing QCD critical fluctuations from intermittency analysis in relativistic heavy-ion collisions
Physics Letters B, 2020 It is shown that intermittency, a self-similar correlation with respect to the size of the phase space volume, is sensitive to critical density fluctuations of baryon numbers in a system belonging to the three-dimensional (3D) Ising universality class ...
Jin Wu +3 more
doaj
Vector-like Leptons: Muon g-2 Anomaly, Lepton Flavor Violation, Higgs Decays, and Lepton Non-Universality [PDF]
Phys. Rev. D 96, 015032 (2017), 2017 In this paper, we consider the Standard Model (SM) with one family of vector-like (VL) leptons, which couple to all three families of the SM leptons. We study the constraints on this model coming from the heavy charged lepton mass bound, electroweak precision data, the muon anomalous magnetic moment, lepton flavor violation, Higgs decay constraints and
arxiv +1 more source
Baryogenesis from Mixing of Lepton Doublets
, 2012 It is shown that the mixing of lepton doublets of the Standard Model can yield sizeable contributions to the lepton asymmetry, that is generated through the decays of right-handed neutrinos at finite temperature in the early Universe.
Garbrecht, Bjorn
core +1 more source
Flavor in SU(5)$SU(5)$ Finite Grand Unified Models
Fortschritte der Physik, Volume 72, Issue 12, December 2024.Abstract Four SU(5)N=1$SU(5) \nobreakspace N=1$ supersymmetric models which exhibit S3$S_3$ and/or ZN$Z_N$ symmetries are studied, that are finite to two or all loops, and their corresponding mass matrices. The first is an all‐loop finite model based on an S3×Z3×Z2$S_3\times Z_3\times Z_2$ flavor symmetry, which leads to phenomenologically nonviable ...
Luis Odín Estrada Ramos +3 more
wiley +1 more source
Leptonic Scalars versus Scalar Leptons [PDF]
Proceedings of Corfu Summer Institute 2019 "School and Workshops on Elementary Particle Physics and Gravity" — PoS(CORFU2019), 2020 The notion of scalars having lepton number, i.e. leptonic scalars, is discussed without supersymmetry, where scalar leptons reside. It is shown how dark parity comes from lepton parity, as well as its possible origin from grand unification. Two specific phenomenological applications to dark matter are described.
openaire +1 more source
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
Lepton polarization asymmetries in $B \to X_s τ^+ τ^-$ in MSSM [PDF]
arXiv, 2003 Semi-leptonic and leptonic decays of B-mesons are important probes for testing SM and theories beyond it because of their relative cleanliness and far less theoretical uncertainties. In semi-leptonic decays based on quark level transition $b \to s \tau^+ \tau^-$ apart from branching ratio one can study many other (possible) observables associated with ...
arxiv
Lepton Flavor in Composite Higgs Models [PDF]
arXiv, 2021 In this talk, I will present the status of lepton flavor physics in composite Higgs models with partial compositeness in the light of recent data in the lepton sector. I will consider anarchic flavor setups, scenarios with flavor symmetries, and minimal incarnations of the see-saw mechanism that naturally predict non-negligible lepton compositeness ...
arxiv
Generation of Quantum Vortex Electrons with Intense Laser Pulses
Advanced Science, Volume 11, Issue 41, November 6, 2024.Wave functions of high‐energy electrons can be manipulated with ultra‐short intense laser pulses. Nonlinear scattering theory illustrates the efficient transfer of numerous spin angular momenta of laser photons to orbital angular momenta of scattered electrons, twisting electron wave functions into quantum vortex states.
Zhigang Bu +7 more
wiley +1 more source
Electroweak Lepton-Lepton and Lepton-Antilepton Bound States
, 1999 In model independent way we consider the possibility of the existence of fermion-antifermion, fermion-fermion bound states which appear due to $ , Z^0(W^{\pm}$-bosons and scalar, pseudoscalars exchanges including radiative corrections. Our consideration includes the case where at least one particle in the bound state is Majorana fermion or scalar.This
openaire +2 more sources