Results 31 to 40 of about 35,230 (208)
Photon splitting corrections to soft-photon resummation
Journal of High Energy Physics, 2023 In this paper we present an algorithm to add photon-splitting corrections to the Yennie-Frautschi-Suura-style soft-photon resummation available in the Sherpa MonteCarlo event generator.
Lois Flower, Marek Schönherr
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QED effects in molecules: test on rotational quantum states of H$_2$ [PDF]
, 2011 Quantum electrodynamic effects have been systematically tested in the progression of rotational quantum states in the $X ^{1}\Sigma_{g}^{+}, v=0$ vibronic ground state of molecular hydrogen. High-precision Doppler-free spectroscopy of the $EF ^{1}\Sigma_{
Dickenson, G. D. +3 more
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Axial-vector transition form factors and e + e − → f 1 π + π −
Journal of High Energy Physics, 2023 We study the transition form factors (TFFs) of axial-vector mesons in the context of currently available experimental data, including new constraints from e + e − → f 1(1285)π + π − that imply stringent limits on the high-energy behavior and, for the ...
Martin Hoferichter +2 more
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Coloring mixed QCD/QED evolution
SciPost Physics, 2022 Parton showers are crucial components of high-energy physics calculations. Improving their modelling of QCD is an active research area since shower approximations are stumbling blocks for precision event generators.
Leif Gellersen, Stefan Prestel, Michael Spannowsky
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High precision tests of QED and physics beyondthe standard model
The European Physical Journal C, 1998 12 pages, LaTeX, minor changes included, to appear in Zeit.
Escribano, Rafel, Massó i Soler, Eduard
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Initial conditions for electron and photon structure and fragmentation functions
Journal of High Energy Physics, 2019 In the computation of short-distance cross sections initiated by electrons and photons one can adopt the so-called structure-function approach, in which these particles play formally the same roles as hadrons do in QCD factorisation theorems, and must ...
S. Frixione
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News on PHOTOS Monte Carlo: gamma^* -> pi^+ pi^-(gamma) and K^\pm -> pi^+ pi^- e^\pm nu (gamma)
, 2010 PHOTOS Monte Carlo is widely used for simulating QED effects in decay of intermediate particles and resonances. It can be easily connected to other main process generators.
Andonov A +5 more
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On factorisation schemes for the electron parton distribution functions in QED
Journal of High Energy Physics, 2021 The electron, positron, and photon Parton Distribution Functions (PDFs) of the unpolarised electron have recently been computed at the next-to-leading logarithmic accuracy in QED, by adopting the MS ¯ $$ \overline{\mathrm{MS}} $$ factorisation scheme. We
S. Frixione
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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
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Radiative corrections to the forward-backward asymmetry in e + e − → π + π −
Journal of High Energy Physics, 2022 We present a calculation of the C-odd radiative corrections to e + e − → π + π − in a dispersive formalism, concentrating on the leading pion-pole contribution in the virtual box diagrams.
Gilberto Colangelo +3 more
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