Cold nuclear matter effects on azimuthal decorrelation in heavy-ion collisions
Abstract The assumption of factorization lies at the core of calculations of medium effects on observables computable in perturbative Quantum Chromodynamics. In this work we examine this assumption, for which we propose a setup to study hard processes and bulk nuclear matter in heavy-ion collisions...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-11-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP11(2024)081 |
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| _version_ | 1846137446188711936 |
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| author | Néstor Armesto Florian Cougoulic Bin Wu |
| author_facet | Néstor Armesto Florian Cougoulic Bin Wu |
| author_sort | Néstor Armesto |
| collection | DOAJ |
| description | Abstract The assumption of factorization lies at the core of calculations of medium effects on observables computable in perturbative Quantum Chromodynamics. In this work we examine this assumption, for which we propose a setup to study hard processes and bulk nuclear matter in heavy-ion collisions on the same footing using the Glauber modelling of heavy nuclei. To exemplify this approach, we calculate the leading-order corrections to azimuthal decorrelation in Drell-Yan and boson-jet processes due to cold nuclear matter effects, not considering radiation. At leading order in both the hard momentum scale and the nuclear size, the impact-parameter dependent cross section is found to factorize for both processes. The factorization formula involves a convolution of the hard cross section with the medium-modified parton distributions, and, for boson-jet production, the medium-modified jet function. |
| format | Article |
| id | doaj-art-99ede502a7024fa3b2fd4dc188d405ce |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-99ede502a7024fa3b2fd4dc188d405ce2024-12-08T12:09:57ZengSpringerOpenJournal of High Energy Physics1029-84792024-11-0120241113010.1007/JHEP11(2024)081Cold nuclear matter effects on azimuthal decorrelation in heavy-ion collisionsNéstor Armesto0Florian Cougoulic1Bin Wu2Instituto Galego de Física de Altas Enerxías IGFAE, Universidade de Santiago de CompostelaInstituto Galego de Física de Altas Enerxías IGFAE, Universidade de Santiago de CompostelaInstituto Galego de Física de Altas Enerxías IGFAE, Universidade de Santiago de CompostelaAbstract The assumption of factorization lies at the core of calculations of medium effects on observables computable in perturbative Quantum Chromodynamics. In this work we examine this assumption, for which we propose a setup to study hard processes and bulk nuclear matter in heavy-ion collisions on the same footing using the Glauber modelling of heavy nuclei. To exemplify this approach, we calculate the leading-order corrections to azimuthal decorrelation in Drell-Yan and boson-jet processes due to cold nuclear matter effects, not considering radiation. At leading order in both the hard momentum scale and the nuclear size, the impact-parameter dependent cross section is found to factorize for both processes. The factorization formula involves a convolution of the hard cross section with the medium-modified parton distributions, and, for boson-jet production, the medium-modified jet function.https://doi.org/10.1007/JHEP11(2024)081Deep Inelastic Scattering or Small-x PhysicsQuark-Gluon Plasma |
| spellingShingle | Néstor Armesto Florian Cougoulic Bin Wu Cold nuclear matter effects on azimuthal decorrelation in heavy-ion collisions Journal of High Energy Physics Deep Inelastic Scattering or Small-x Physics Quark-Gluon Plasma |
| title | Cold nuclear matter effects on azimuthal decorrelation in heavy-ion collisions |
| title_full | Cold nuclear matter effects on azimuthal decorrelation in heavy-ion collisions |
| title_fullStr | Cold nuclear matter effects on azimuthal decorrelation in heavy-ion collisions |
| title_full_unstemmed | Cold nuclear matter effects on azimuthal decorrelation in heavy-ion collisions |
| title_short | Cold nuclear matter effects on azimuthal decorrelation in heavy-ion collisions |
| title_sort | cold nuclear matter effects on azimuthal decorrelation in heavy ion collisions |
| topic | Deep Inelastic Scattering or Small-x Physics Quark-Gluon Plasma |
| url | https://doi.org/10.1007/JHEP11(2024)081 |
| work_keys_str_mv | AT nestorarmesto coldnuclearmattereffectsonazimuthaldecorrelationinheavyioncollisions AT floriancougoulic coldnuclearmattereffectsonazimuthaldecorrelationinheavyioncollisions AT binwu coldnuclearmattereffectsonazimuthaldecorrelationinheavyioncollisions |