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A new approach to semi-inclusive deep-inelastic scattering with QED and QCD factorization
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We present the details of a new factorized approach to semi-inclusive deep-inelastic scattering which treats QED and QCD radiation on equal footing, and provides a systematically improvable approximation to the extraction of transverse momentum dependent parton distributions. We demonstrate how the QED contributions can be well approximated by collinear factorization, and illustrate the application of the factorized approach to QED radiation in inclusive scattering. For semi-inclusive processes, we show how radiation effects prevent a well-defined "photon-nucleon" frame, forcing one to use a two-step process to account for the radiation. We illustrate the utility of the new method by explicit application to the spin-dependent Sivers and Collins asymmetries.
Forward citations
Cited by 3 Pith papers
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Single inclusive hadron and jet production in lepton-hadron scattering
Single inclusive high-PT hadron and jet production in lepton-hadron scattering is factorized using a joint QCD+QED approach with universal lepton distribution functions, and predictions are given for JLab and EIC energies.
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Factorized QED and QCD Contribution to Deeply Inelastic Scattering
The NLO factorized QED contribution to the leading e+q->e+X subprocess of DIS is computed and shown to be infrared safe with no free parameters beyond the factorization scale.
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Impact of QED Radiation on SMEFT Constraints in Deep Inelastic Scattering
Collision-induced QED radiation produces O(1) corrections to DIS cross sections but only few-percent shifts in longitudinal electron spin asymmetries, making asymmetries more robust for SMEFT constraints at SoLID and EIC.
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