Results 31 to 40 of about 2,356,950 (226)
Cavity QED with Multilevel Atoms [PDF]
, 2005 The steady-state transmission spectrum of a cavity with two modes of orthogonal polarization strongly coupled to a single atom with multiple Zeeman states is computed. Effects due to cavity birefringence and atomic ac-Stark shifts are included.
Birnbaum, Kevin Michael
core +1 more source
Final-state QED multipole radiation in antenna parton showers
Journal of High Energy Physics, 2017 We present a formalism for a fully coherent QED parton shower. The complete multipole structure of photonic radiation is incorporated in a single branching kernel.
Ronald Kleiss, Rob Verheyen
doaj +1 more source
Towards muon-electron scattering at NNLO
Journal of High Energy Physics, 2020 The recently proposed MUonE experiment at CERN aims at providing a novel determination of the leading order hadronic contribution to the muon anomalous magnetic moment through the study of elastic muon-electron scattering at relatively small momentum ...
Carlo M. Carloni Calame +5 more
doaj +1 more source
Analytic results for two-loop planar master integrals for Bhabha scattering
Journal of High Energy Physics, 2021 We analytically evaluate the master integrals for the second type of planar contributions to the massive two-loop Bhabha scattering in QED using differential equations with canonical bases.
Claude Duhr +2 more
doaj +1 more source
High-precision calculation of the 4-loop QED contribution to the slope of the Dirac form factor [PDF]
Physics Letters B, 2019 We have evaluated with 1100 digits of precision the contribution of all the 891 mass-independent four-loop Feynman diagrams contributing to the slope of the Dirac form factor in QED.
S. Laporta
semanticscholar +1 more source
Lepton-pair scattering with an off-shell and an on-shell photon at two loops in massless QED [PDF]
Journal of High Energy Physics, 2023 We compute the two-loop QED helicity amplitudes for the scattering of a lepton pair with an off-shell and an on-shell photon, 0 → ℓℓ¯γγ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb ...
S. Badger +3 more
semanticscholar +1 more source
Inclusion of QED corrections in PDFs fits [PDF]
, 2023 The need of percent precision in high energy physics requires the inclusion of QED effects in theoretical predictions, including the contribution of photon-initiated processes.
Laurenti, Niccolò
core +1 more source
Status of the BabaYaga event generator [PDF]
EPJ Web of Conferences, 2019 The Monte Carlo event generator BabaYaga has been developed for high precision simulation of QED processes (e+e−→ e+ e− , e+e−→ µ+µ− and e+e−→ γγ) at flavour factories, chiefly for luminometry purposes, with an estimated theoretical accuracy at the 0.1 ...
Carloni Calame Carlo M. +3 more
doaj +1 more source
High-precision quantum dynamics of He2 over the b 3Πg-c 3Σg+ electronic subspace by including non-adiabatic, relativistic, and QED corrections and couplings. [PDF]
Journal of Chemical PhysicsRelativistic, quantum electrodynamics, and non-adiabatic corrections and couplings are computed for the b 3Πg and c3Σg+ electronic states of the helium dimer.
Bal'azs R'acsai +3 more
semanticscholar +1 more source
Precision Spectroscopy in He as a Test of QED
Physica Scripta, 1999 High-resolution laser-based measurements of energy levels have spurred the development and refinement of quantum electrodynamic calculations. We have extended very-high-resolution laser spectroscopy techniques into the vacuum ultraviolet wavelength region at λ ≈ 120 nm to determine the Lamb shift in the ground state of He I.
Bergeson, S +12 more
openaire +1 more source