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High precision determination of $\alpha_s$ from a global fit of jet rates
We present state-of-the-art extractions of the strong coupling based on N$^{3}$LO+NNLL accurate predictions for the two-jet rate in the Durham clustering algorithm at e$^{+}$e$^{−}$ collisions, as well as a simultaneous fit of the two- and three-jet rates taking into account correlations between the...
| Autores principales: | , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2019
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1007/JHEP08(2019)129 http://cds.cern.ch/record/2663098 |
| _version_ | 1780961699438788608 |
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| author | Verbytskyi, Andrii Banfi, Andrea Kardos, Adam Monni, Pier Francesco Kluth, Stefan Somogyi, Gábor Szőr, Zoltán Trócsányi, Zoltán Tulipánt, Zoltán Zanderighi, Giulia |
| author_facet | Verbytskyi, Andrii Banfi, Andrea Kardos, Adam Monni, Pier Francesco Kluth, Stefan Somogyi, Gábor Szőr, Zoltán Trócsányi, Zoltán Tulipánt, Zoltán Zanderighi, Giulia |
| author_sort | Verbytskyi, Andrii |
| collection | CERN |
| description | We present state-of-the-art extractions of the strong coupling based on N$^{3}$LO+NNLL accurate predictions for the two-jet rate in the Durham clustering algorithm at e$^{+}$e$^{−}$ collisions, as well as a simultaneous fit of the two- and three-jet rates taking into account correlations between the two observables. The fits are performed on a large range of data sets collected at the LEP and PETRA colliders, with energies spanning from 35 GeV to 207 GeV. Owing to the high accuracy of the predictions used, the perturbative uncertainty is considerably smaller than that due to hadronization. Our best determination at the Z mass is α$_{s}$ (M$_{Z}$) = 0.11881 ± 0.00063(exp.) ± 0.00101(hadr.) ± 0.00045(ren.) ± 0.00034(res.), which is in agreement with the latest world average and has a comparable total uncertainty. |
| id | cern-2663098 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2019 |
| record_format | invenio |
| spelling | cern-26630982021-11-13T11:06:36Zdoi:10.1007/JHEP08(2019)129http://cds.cern.ch/record/2663098engVerbytskyi, AndriiBanfi, AndreaKardos, AdamMonni, Pier FrancescoKluth, StefanSomogyi, GáborSzőr, ZoltánTrócsányi, ZoltánTulipánt, ZoltánZanderighi, GiuliaHigh precision determination of $\alpha_s$ from a global fit of jet rateshep-phParticle Physics - PhenomenologyWe present state-of-the-art extractions of the strong coupling based on N$^{3}$LO+NNLL accurate predictions for the two-jet rate in the Durham clustering algorithm at e$^{+}$e$^{−}$ collisions, as well as a simultaneous fit of the two- and three-jet rates taking into account correlations between the two observables. The fits are performed on a large range of data sets collected at the LEP and PETRA colliders, with energies spanning from 35 GeV to 207 GeV. Owing to the high accuracy of the predictions used, the perturbative uncertainty is considerably smaller than that due to hadronization. Our best determination at the Z mass is α$_{s}$ (M$_{Z}$) = 0.11881 ± 0.00063(exp.) ± 0.00101(hadr.) ± 0.00045(ren.) ± 0.00034(res.), which is in agreement with the latest world average and has a comparable total uncertainty.We present state-of-the-art extractions of the strong coupling based on N$^3$LO+NNLL accurate predictions for the two-jet rate in the Durham clustering algorithm at $e^+e^-$ collisions, as well as a simultaneous fit of the two- and three-jet rates taking into account correlations between the two observables. The fits are performed on a large range of data sets collected at LEP and PETRA colliders, with energies spanning from $35$ GeV to $207$ GeV. Owing to the high accuracy of the predictions used, the perturbative uncertainty is considerably smaller than that due to hadronization. Our best determination at the $Z$ mass is $\alpha_s(M_Z) = 0.11881 \pm 0.00063(exp.) \pm 0.00101(hadr.) \pm 0.00045(ren.) \pm 0.00034(res.)$, which is in agreement with the latest world average and has a comparable total uncertainty.arXiv:1902.08158MPP-2019-37CERN-TH-2019-015MITP/19-012oai:cds.cern.ch:26630982019-02-21 |
| spellingShingle | hep-ph Particle Physics - Phenomenology Verbytskyi, Andrii Banfi, Andrea Kardos, Adam Monni, Pier Francesco Kluth, Stefan Somogyi, Gábor Szőr, Zoltán Trócsányi, Zoltán Tulipánt, Zoltán Zanderighi, Giulia High precision determination of $\alpha_s$ from a global fit of jet rates |
| title | High precision determination of $\alpha_s$ from a global fit of jet rates |
| title_full | High precision determination of $\alpha_s$ from a global fit of jet rates |
| title_fullStr | High precision determination of $\alpha_s$ from a global fit of jet rates |
| title_full_unstemmed | High precision determination of $\alpha_s$ from a global fit of jet rates |
| title_short | High precision determination of $\alpha_s$ from a global fit of jet rates |
| title_sort | high precision determination of $\alpha_s$ from a global fit of jet rates |
| topic | hep-ph Particle Physics - Phenomenology |
| url | https://dx.doi.org/10.1007/JHEP08(2019)129 http://cds.cern.ch/record/2663098 |
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