NNLO QCD×EW corrections to Z production in the qq¯ channel
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 produ...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
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American Physical Society
2020
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| _version_ | 1797095944182824960 |
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| author | Bonciani, R Buccioni, F Rana, N Triscari, I Vicini, A |
| author_facet | Bonciani, R Buccioni, F Rana, N Triscari, I Vicini, A |
| author_sort | Bonciani, R |
| collection | OXFORD |
| description | 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. |
| first_indexed | 2024-03-07T04:35:12Z |
| format | Journal article |
| id | oxford-uuid:cfb3a822-8616-4575-baa8-804c43e19e95 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:35:12Z |
| publishDate | 2020 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:cfb3a822-8616-4575-baa8-804c43e19e952022-03-27T07:44:30ZNNLO QCD×EW corrections to Z production in the qq¯ channelJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:cfb3a822-8616-4575-baa8-804c43e19e95EnglishSymplectic ElementsAmerican Physical Society2020Bonciani, RBuccioni, FRana, NTriscari, IVicini, AWe 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. |
| spellingShingle | Bonciani, R Buccioni, F Rana, N Triscari, I Vicini, A NNLO QCD×EW corrections to Z production in the qq¯ channel |
| title | NNLO QCD×EW corrections to Z production in the qq¯ channel |
| title_full | NNLO QCD×EW corrections to Z production in the qq¯ channel |
| title_fullStr | NNLO QCD×EW corrections to Z production in the qq¯ channel |
| title_full_unstemmed | NNLO QCD×EW corrections to Z production in the qq¯ channel |
| title_short | NNLO QCD×EW corrections to Z production in the qq¯ channel |
| title_sort | nnlo qcd ew corrections to z production in the qq¯ channel |
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