Comment on 'Single-inclusive jet production in electron–nucleon collisions through next-to-next-to-leading order in perturbative QCD' [Phys. Lett. B 763 (2016) 52–59]
- Resource Type
- article
- Authors
- Geoffrey T. Bodwin; Eric Braaten
- Source
- Physics Letters B, Vol 769, Iss C, Pp 82-83 (2017)
- Subject
- Physics
QC1-999
- Language
- English
- ISSN
- 0370-2693
1873-2445
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.