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.
Comment on "Single-inclusive jet production in electron-nucleon collisions through next-to-next-to-leading order in perturbative QCD" [Phys. Lett. B 763, 52--59 (2016)]
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abstract
In the cross section for single-inclusive jet production in electron-nucleon collisions, the distribution of a quark in an electron appears at next-to-next-to-leading order. The numerical calculations in Ref. [1] were carried out using a perturbative approximation for the distribution of a quark in an electron. We point out that that distribution receives nonperturbative QCD contributions that invalidate the perturbative approximation. Those nonperturbative effects enter into cross sections for hard-scattering processes through resolved-electron contributions and can be taken into account by determining the distribution of a quark in an electron phenomenologically.
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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.