Power corrections to the production of a color-singlet final state in hadron collisions in the N-jettiness slicing scheme at NLO QCD
Abstract We compute next-to-leading power corrections in the zero-jettiness variable for the production of colorless final states at hadron colliders at next-to-leading order in QCD. To assess if the process-independence of leading power contributions can be extended, we attempt to construct generic...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-07-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP07(2025)204 |
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| author | Prem Agarwal Kirill Melnikov Ivan Pedron Philip Pfohl |
| author_facet | Prem Agarwal Kirill Melnikov Ivan Pedron Philip Pfohl |
| author_sort | Prem Agarwal |
| collection | DOAJ |
| description | Abstract We compute next-to-leading power corrections in the zero-jettiness variable for the production of colorless final states at hadron colliders at next-to-leading order in QCD. To assess if the process-independence of leading power contributions can be extended, we attempt to construct generic expansions of phase spaces and matrix elements squared through next-to-leading power in the zero-jettiness. We highlight challenges associated with the collinear limit, where universality no longer holds at the subleading power, making the result process-dependent. We show that quantities that need to be calculated in the collinear limit can be obtained using Berends-Giele currents, enabling computation of power corrections to high-multiplicity final states. As a concrete example, we apply our method to compute power corrections in the zero-jettiness for lepton pair as well as multi-photon production in q q ¯ $$ q\overline{q} $$ collisions. |
| format | Article |
| id | doaj-art-85d3ee93925d44eaa6b8c9c8bef17e52 |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-85d3ee93925d44eaa6b8c9c8bef17e522025-08-20T03:42:34ZengSpringerOpenJournal of High Energy Physics1029-84792025-07-012025717110.1007/JHEP07(2025)204Power corrections to the production of a color-singlet final state in hadron collisions in the N-jettiness slicing scheme at NLO QCDPrem Agarwal0Kirill Melnikov1Ivan Pedron2Philip Pfohl3Institute for Theoretical Particle Physics, KITInstitute for Theoretical Particle Physics, KITInstitute for Theoretical Particle Physics, KITInstitute for Theoretical Particle Physics, KITAbstract We compute next-to-leading power corrections in the zero-jettiness variable for the production of colorless final states at hadron colliders at next-to-leading order in QCD. To assess if the process-independence of leading power contributions can be extended, we attempt to construct generic expansions of phase spaces and matrix elements squared through next-to-leading power in the zero-jettiness. We highlight challenges associated with the collinear limit, where universality no longer holds at the subleading power, making the result process-dependent. We show that quantities that need to be calculated in the collinear limit can be obtained using Berends-Giele currents, enabling computation of power corrections to high-multiplicity final states. As a concrete example, we apply our method to compute power corrections in the zero-jettiness for lepton pair as well as multi-photon production in q q ¯ $$ q\overline{q} $$ collisions.https://doi.org/10.1007/JHEP07(2025)204Higher-Order Perturbative CalculationsSpecific QCD PhenomenologyAutomation |
| spellingShingle | Prem Agarwal Kirill Melnikov Ivan Pedron Philip Pfohl Power corrections to the production of a color-singlet final state in hadron collisions in the N-jettiness slicing scheme at NLO QCD Journal of High Energy Physics Higher-Order Perturbative Calculations Specific QCD Phenomenology Automation |
| title | Power corrections to the production of a color-singlet final state in hadron collisions in the N-jettiness slicing scheme at NLO QCD |
| title_full | Power corrections to the production of a color-singlet final state in hadron collisions in the N-jettiness slicing scheme at NLO QCD |
| title_fullStr | Power corrections to the production of a color-singlet final state in hadron collisions in the N-jettiness slicing scheme at NLO QCD |
| title_full_unstemmed | Power corrections to the production of a color-singlet final state in hadron collisions in the N-jettiness slicing scheme at NLO QCD |
| title_short | Power corrections to the production of a color-singlet final state in hadron collisions in the N-jettiness slicing scheme at NLO QCD |
| title_sort | power corrections to the production of a color singlet final state in hadron collisions in the n jettiness slicing scheme at nlo qcd |
| topic | Higher-Order Perturbative Calculations Specific QCD Phenomenology Automation |
| url | https://doi.org/10.1007/JHEP07(2025)204 |
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