Journal article
NNLO QCD×EW corrections to Z production in the qq¯ channel
- Abstract:
- We present the first results for the O(ααs) corrections to the total partonic cross section of the process q¯q→Z+X, with the complete set of contributions, that include photonic and massive weak gauge boson effects. The results are relevant for the precise determination of the hadronic Z boson production cross section. Virtual and real corrections are calculated analytically using the reduction to the master integrals and their evaluation through differential equations. Real corrections are dealt with using the reverse-unitarity method. They require the evaluation of a new set of two-loop master integrals, with up to three internal massive lines. In particular, three of them are expressed in terms of elliptic integrals. We verify the absence, at this perturbative order, of initial-state mass singularities proportional to a weak massive virtual correction to the quark-gluon splitting.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 286.8KB, Terms of use)
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- Publisher copy:
- 10.1103/physrevd.101.031301
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review D More from this journal
- Volume:
- 101
- Issue:
- 3
- Article number:
- 31301
- Publication date:
- 2020-02-28
- Acceptance date:
- 2020-02-10
- DOI:
- EISSN:
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2470-0029
- ISSN:
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2470-0010
- Language:
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English
- Keywords:
- Pubs id:
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1091415
- Local pid:
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pubs:1091415
- Deposit date:
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2020-03-06
- ARK identifier:
Terms of use
- Copyright holder:
- American Physical Society
- Copyright date:
- 2020
- Rights statement:
- © American Physical Society 2020. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
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