On the breaking of Casimir scaling in jet quenching
Abstract We study the breaking of Casimir scaling, $$C_F/C_A$$ CF/CA , due to the evolution of jets in a hot and extended medium. By using JEWEL, a medium modified Monte Carlo event generator validated for a wide set of observables, we are able to study separately the development of quark and gluon-...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2020-06-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-020-8133-1 |
| _version_ | 1818541910676996096 |
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| author | Liliana Apolinário João Barata Guilherme Milhano |
| author_facet | Liliana Apolinário João Barata Guilherme Milhano |
| author_sort | Liliana Apolinário |
| collection | DOAJ |
| description | Abstract We study the breaking of Casimir scaling, $$C_F/C_A$$ CF/CA , due to the evolution of jets in a hot and extended medium. By using JEWEL, a medium modified Monte Carlo event generator validated for a wide set of observables, we are able to study separately the development of quark and gluon-initiated jets produced back-to-back with a $$Z-$$ Z- boson. Focusing on the $$p_T$$ pT distribution, we conclude first that the colour charge ratio is constant but larger than Casimir scaling for high $$p_T$$ pT jets. In addition, our results seem to indicate that the medium induced cascade is more similar between quarks and gluons, thus driving the overall medium shower scaling away from the vacuum expectation. Finally, we compare our results to another Monte Carlo generator and observe the same scaling violation. |
| first_indexed | 2024-12-11T22:15:19Z |
| format | Article |
| id | doaj.art-46b1dd3eddac4b58b84cc5d21acba81b |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-11T22:15:19Z |
| publishDate | 2020-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-46b1dd3eddac4b58b84cc5d21acba81b2022-12-22T00:48:37ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522020-06-018061810.1140/epjc/s10052-020-8133-1On the breaking of Casimir scaling in jet quenchingLiliana Apolinário0João Barata1Guilherme Milhano2LIPInstituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de CompostelaLIPAbstract We study the breaking of Casimir scaling, $$C_F/C_A$$ CF/CA , due to the evolution of jets in a hot and extended medium. By using JEWEL, a medium modified Monte Carlo event generator validated for a wide set of observables, we are able to study separately the development of quark and gluon-initiated jets produced back-to-back with a $$Z-$$ Z- boson. Focusing on the $$p_T$$ pT distribution, we conclude first that the colour charge ratio is constant but larger than Casimir scaling for high $$p_T$$ pT jets. In addition, our results seem to indicate that the medium induced cascade is more similar between quarks and gluons, thus driving the overall medium shower scaling away from the vacuum expectation. Finally, we compare our results to another Monte Carlo generator and observe the same scaling violation.http://link.springer.com/article/10.1140/epjc/s10052-020-8133-1 |
| spellingShingle | Liliana Apolinário João Barata Guilherme Milhano On the breaking of Casimir scaling in jet quenching European Physical Journal C: Particles and Fields |
| title | On the breaking of Casimir scaling in jet quenching |
| title_full | On the breaking of Casimir scaling in jet quenching |
| title_fullStr | On the breaking of Casimir scaling in jet quenching |
| title_full_unstemmed | On the breaking of Casimir scaling in jet quenching |
| title_short | On the breaking of Casimir scaling in jet quenching |
| title_sort | on the breaking of casimir scaling in jet quenching |
| url | http://link.springer.com/article/10.1140/epjc/s10052-020-8133-1 |
| work_keys_str_mv | AT lilianaapolinario onthebreakingofcasimirscalinginjetquenching AT joaobarata onthebreakingofcasimirscalinginjetquenching AT guilhermemilhano onthebreakingofcasimirscalinginjetquenching |