Results 21 to 30 of about 2,798 (204)

Inclusion of QED corrections in PDFs fits [PDF]

open access: yes, 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

QED at NNLO and beyond for precision experiments

open access: yesProceedings of 16th International Symposium on Radiative Corrections: Applications of Quantum Field Theory to Phenomenology — PoS(RADCOR2023), 2023
Low-energy experiments allow for some of the most precise measurements in particle physics, such as $g-2$. To make the most of these experiments, theory needs to match the experimental precision. Over the last decade, this meant that even in QED next-to-next-to-leading order calculations (or even more in some cases) became necessary.
openaire   +2 more sources

Cavity QED with Multilevel Atoms [PDF]

open access: yes, 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

open access: yesJournal 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

open access: yesJournal 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

open access: yesJournal 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

Status of the BabaYaga event generator [PDF]

open access: yesEPJ 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

Rational terms of UV origin at two loops

open access: yesJournal of High Energy Physics, 2020
The advent of efficient numerical algorithms for the construction of one-loop amplitudes has played a crucial role in the automation of NLO calculations, and the development of similar algorithms at two loops is a natural strategy for NNLO automation ...
Stefano Pozzorini   +2 more
doaj   +1 more source

NNLO virtual and real leptonic corrections to muon-electron scattering

open access: yesJournal of High Energy Physics, 2021
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 ...
Ettore Budassi   +7 more
doaj   +1 more source

Measurement of V0 production ratios in pp collisions at √s=0.9 and 7 TeV [PDF]

open access: yes, 2011
The Λ/Λ and Λ/K0S production ratios are measured by the LHCb detector from 0.3 nb−1 of pp collisions delivered by the LHC at √s = 0.9 TeV and 1.8 nb−1 at √s = 7 TeV.
Minard, M   +999 more
core   +1 more source

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