SciPost Submission Page
Towards two-loop QCD corrections to pp→tˉtj
by Colomba Brancaccio
Submission summary
| Authors (as registered SciPost users): | Colomba Brancaccio |
| Submission information | |
|---|---|
| Preprint Link: | scipost_202411_00046v1 (pdf) |
| Date accepted: | 2024-12-27 |
| Date submitted: | 2024-11-22 16:36 |
| Submitted by: | Brancaccio, Colomba |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | The 17th International Workshop on Top Quark Physics (TOP2024) |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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Abstract
I discuss the status of the computation of the two-loop QCD corrections to top-quark pair production associated with a jet at hadron colliders. This amplitude is a missing ingredient for next-to-next-to-leading order (NNLO) QCD predictions. I briefly present computational techniques to tackle the algebraic and analytic complexities of two-loop multi-scale amplitudes, in particular where massive propagators give rise to elliptic Feynman integrals. I then describe how a special function basis for the helicity amplitudes is obtained and present first numerical evaluations for the finite remainders of the gg→tˉtg channel, after the infrared and ultraviolet poles have been identified analytically.
Current status:
Editorial decision:
For Journal SciPost Physics Proceedings: Publish
(status: Editorial decision fixed and (if required) accepted by authors)
Reports on this Submission
Report
These proceedings describe the progress in computing two-loop QCD corrections for the tˉtj process, presenting a framework for evaluating the finite remainder of two-loop helicity amplitudes. The manuscript is well-written, meets the journal's standards, and presents a meaningful contribution to the field. I have not identified any issues requiring revision, and therefore, I recommend it for publication.
Recommendation
Publish (meets expectations and criteria for this Journal)