Infrared renormalons in kinematic distributions for hadron collider processes
Abstract Infrared renormalons in Quantum Chromodynamics are associated with non-perturbative corrections to short distance observables. Linear renormalons, i.e. such that the associated non-perturbative corrections scale like one inverse power of the hard scale, can affect at a non-negligible level...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-06-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP06(2021)018 |
| _version_ | 1819015913516564480 |
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| author | Silvia Ferrario Ravasio Giovanni Limatola Paolo Nason |
| author_facet | Silvia Ferrario Ravasio Giovanni Limatola Paolo Nason |
| author_sort | Silvia Ferrario Ravasio |
| collection | DOAJ |
| description | Abstract Infrared renormalons in Quantum Chromodynamics are associated with non-perturbative corrections to short distance observables. Linear renormalons, i.e. such that the associated non-perturbative corrections scale like one inverse power of the hard scale, can affect at a non-negligible level even the very high-energy phenomena studied at the Large Hadron Collider. Using an Abelian model, we study the presence of linear renormalons in the transverse momentum distribution of a neutral vector boson Z produced in hadronic collisions. We consider a process where the Z transverse momentum is balanced by a sizable recoil against a coloured final state particle. One may worry that such a colour configuration, not being azimuthally symmetric, could generate unbalanced soft radiation, associated in turn with linear infrared renormalons affecting the transverse momentum distribution of the vector boson. We performed a numerical calculation of the renormalon effects for this process in the so-called large b 0 limit. We found no evidence of linear renormalons in the transverse momentum distribution of the Z in the large transverse-momentum region, irrespective of rapidity cuts. |
| first_indexed | 2024-12-21T02:39:17Z |
| format | Article |
| id | doaj.art-898a299b35d14988861fe868e3119f02 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-21T02:39:17Z |
| publishDate | 2021-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-898a299b35d14988861fe868e3119f022022-12-21T19:18:43ZengSpringerOpenJournal of High Energy Physics1029-84792021-06-012021612310.1007/JHEP06(2021)018Infrared renormalons in kinematic distributions for hadron collider processesSilvia Ferrario Ravasio0Giovanni Limatola1Paolo Nason2Institute for Particle Physics Phenomenology, University of DurhamUniversità di Milano-Bicocca and INFN — Sezione di Milano-BicoccaUniversità di Milano-Bicocca and INFN — Sezione di Milano-BicoccaAbstract Infrared renormalons in Quantum Chromodynamics are associated with non-perturbative corrections to short distance observables. Linear renormalons, i.e. such that the associated non-perturbative corrections scale like one inverse power of the hard scale, can affect at a non-negligible level even the very high-energy phenomena studied at the Large Hadron Collider. Using an Abelian model, we study the presence of linear renormalons in the transverse momentum distribution of a neutral vector boson Z produced in hadronic collisions. We consider a process where the Z transverse momentum is balanced by a sizable recoil against a coloured final state particle. One may worry that such a colour configuration, not being azimuthally symmetric, could generate unbalanced soft radiation, associated in turn with linear infrared renormalons affecting the transverse momentum distribution of the vector boson. We performed a numerical calculation of the renormalon effects for this process in the so-called large b 0 limit. We found no evidence of linear renormalons in the transverse momentum distribution of the Z in the large transverse-momentum region, irrespective of rapidity cuts.https://doi.org/10.1007/JHEP06(2021)018Perturbative QCDRenormalization Regularization and Renormalons |
| spellingShingle | Silvia Ferrario Ravasio Giovanni Limatola Paolo Nason Infrared renormalons in kinematic distributions for hadron collider processes Journal of High Energy Physics Perturbative QCD Renormalization Regularization and Renormalons |
| title | Infrared renormalons in kinematic distributions for hadron collider processes |
| title_full | Infrared renormalons in kinematic distributions for hadron collider processes |
| title_fullStr | Infrared renormalons in kinematic distributions for hadron collider processes |
| title_full_unstemmed | Infrared renormalons in kinematic distributions for hadron collider processes |
| title_short | Infrared renormalons in kinematic distributions for hadron collider processes |
| title_sort | infrared renormalons in kinematic distributions for hadron collider processes |
| topic | Perturbative QCD Renormalization Regularization and Renormalons |
| url | https://doi.org/10.1007/JHEP06(2021)018 |
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