First computation of Mueller Tang processes using a full NLL BFKL approach
Abstract We present the full next-to-leading order (NLO) prediction for the jet-gap-jet cross section at the LHC within the BFKL approach. We implement, for the first time, the NLO impact factors in the calculation of the cross section. We provide results for differential cross sections as a functio...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-06-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP06(2023)091 |
| _version_ | 1797675853244530688 |
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| author | Dimitri Colferai Federico Deganutti Timothy G. Raben Christophe Royon |
| author_facet | Dimitri Colferai Federico Deganutti Timothy G. Raben Christophe Royon |
| author_sort | Dimitri Colferai |
| collection | DOAJ |
| description | Abstract We present the full next-to-leading order (NLO) prediction for the jet-gap-jet cross section at the LHC within the BFKL approach. We implement, for the first time, the NLO impact factors in the calculation of the cross section. We provide results for differential cross sections as a function of the difference in rapidity and azimuthal angle betwen the two jets and the second leading jet transverse momentum. The NLO corrections of the impact factors induce an overall reduction of the cross section with respect to the corresponding predictions with only LO impact factors. We note that NLO impact factors feature a logarithmic dependence of the cross section on the total center of mass energy which formally violates BFKL factorization. We show that such term is one order of magnitude smaller than the total contribution, and thus can be safely included in the current prediction without a need of further resummation of such logarithmic terms. Fixing the renormalization scale μ R according to the principle of minimal sensitivity, suggests μ R about 4 times the sum of the transverse jet energies and provides smaller theroretical uncertainties with respect to the leading order case. |
| first_indexed | 2024-03-11T22:20:38Z |
| format | Article |
| id | doaj.art-254b4ef24fea4f5c9807624fbc5b196f |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-03-11T22:20:38Z |
| publishDate | 2023-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-254b4ef24fea4f5c9807624fbc5b196f2023-09-24T11:06:03ZengSpringerOpenJournal of High Energy Physics1029-84792023-06-012023614810.1007/JHEP06(2023)091First computation of Mueller Tang processes using a full NLL BFKL approachDimitri Colferai0Federico Deganutti1Timothy G. Raben2Christophe Royon3Istituto Nazionale di Fisica Nucleare, Sezione di FirenzeDepartment of Physics and Astronomy, University of KansasDepartment of Physics and Astronomy, University of KansasDepartment of Physics and Astronomy, University of KansasAbstract We present the full next-to-leading order (NLO) prediction for the jet-gap-jet cross section at the LHC within the BFKL approach. We implement, for the first time, the NLO impact factors in the calculation of the cross section. We provide results for differential cross sections as a function of the difference in rapidity and azimuthal angle betwen the two jets and the second leading jet transverse momentum. The NLO corrections of the impact factors induce an overall reduction of the cross section with respect to the corresponding predictions with only LO impact factors. We note that NLO impact factors feature a logarithmic dependence of the cross section on the total center of mass energy which formally violates BFKL factorization. We show that such term is one order of magnitude smaller than the total contribution, and thus can be safely included in the current prediction without a need of further resummation of such logarithmic terms. Fixing the renormalization scale μ R according to the principle of minimal sensitivity, suggests μ R about 4 times the sum of the transverse jet energies and provides smaller theroretical uncertainties with respect to the leading order case.https://doi.org/10.1007/JHEP06(2023)091Deep Inelastic Scattering or Small-x PhysicsJets and Jet Substructure |
| spellingShingle | Dimitri Colferai Federico Deganutti Timothy G. Raben Christophe Royon First computation of Mueller Tang processes using a full NLL BFKL approach Journal of High Energy Physics Deep Inelastic Scattering or Small-x Physics Jets and Jet Substructure |
| title | First computation of Mueller Tang processes using a full NLL BFKL approach |
| title_full | First computation of Mueller Tang processes using a full NLL BFKL approach |
| title_fullStr | First computation of Mueller Tang processes using a full NLL BFKL approach |
| title_full_unstemmed | First computation of Mueller Tang processes using a full NLL BFKL approach |
| title_short | First computation of Mueller Tang processes using a full NLL BFKL approach |
| title_sort | first computation of mueller tang processes using a full nll bfkl approach |
| topic | Deep Inelastic Scattering or Small-x Physics Jets and Jet Substructure |
| url | https://doi.org/10.1007/JHEP06(2023)091 |
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