Determination of the strong coupling constant αs(mZ) in next-to-next-to-leading order QCD using H1 jet cross section measurements: H1 Collaboration
The strong coupling constant $\alpha _\mathrm{s}$ is determined from inclusive jet and dijet cross sections in neutral-current deep-inelastic ep scattering (DIS) measured at HERA by the H1 collaboration using next-to-next-to-leading order (NNLO) QCD predictions. The dependence of the NNLO predictio...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal article |
| Language: | English |
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Springer Verlag
2017
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| _version_ | 1797056837596479488 |
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| author | Andreev, V Baghdasaryan, A Begzsuren, K Gwenlan, C Radescu, V |
| author2 | H1 Collaboration |
| author_facet | H1 Collaboration Andreev, V Baghdasaryan, A Begzsuren, K Gwenlan, C Radescu, V |
| author_sort | Andreev, V |
| collection | OXFORD |
| description | The strong coupling constant $\alpha _\mathrm{s}$ is determined from inclusive jet and dijet cross sections in neutral-current deep-inelastic ep scattering (DIS) measured at HERA by the H1 collaboration using next-to-next-to-leading order (NNLO) QCD predictions. The dependence of the NNLO predictions and of the resulting value of $\alpha _\mathrm{s} (m_\mathrm{Z})$ at the Z-boson mass $m_Z$ are studied as a function of the choice of the renormalisation and factorisation scales. Using inclusive jet and dijet data together, the strong coupling constant is determined to be $\alpha _\mathrm{s} (m_\mathrm{Z}) =0.1157\,(20)_\mathrm{exp}\,(29)_\mathrm{th}$. Complementary, $\alpha _\mathrm{s} (m_\mathrm{Z})$ is determined together with parton distribution functions of the proton (PDFs) from jet and inclusive DIS data measured by the H1 experiment. The value $\alpha _\mathrm{s} (m_\mathrm{Z}) =0.1142\,(28)_\mathrm{tot}$ obtained is consistent with the determination from jet data alone. The impact of the jet data on the PDFs is studied. The running of the strong coupling is tested at different values of the renormalisation scale and the results are found to be in agreement with expectations. |
| first_indexed | 2024-03-06T19:28:06Z |
| format | Journal article |
| id | oxford-uuid:1c7d404e-f22f-4e89-ab61-cb05e065194b |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:28:06Z |
| publishDate | 2017 |
| publisher | Springer Verlag |
| record_format | dspace |
| spelling | oxford-uuid:1c7d404e-f22f-4e89-ab61-cb05e065194b2022-03-26T11:06:00ZDetermination of the strong coupling constant αs(mZ) in next-to-next-to-leading order QCD using H1 jet cross section measurements: H1 CollaborationJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:1c7d404e-f22f-4e89-ab61-cb05e065194bEnglishSymplectic Elements at OxfordSpringer Verlag2017Andreev, VBaghdasaryan, ABegzsuren, KGwenlan, CRadescu, VH1 CollaborationThe strong coupling constant $\alpha _\mathrm{s}$ is determined from inclusive jet and dijet cross sections in neutral-current deep-inelastic ep scattering (DIS) measured at HERA by the H1 collaboration using next-to-next-to-leading order (NNLO) QCD predictions. The dependence of the NNLO predictions and of the resulting value of $\alpha _\mathrm{s} (m_\mathrm{Z})$ at the Z-boson mass $m_Z$ are studied as a function of the choice of the renormalisation and factorisation scales. Using inclusive jet and dijet data together, the strong coupling constant is determined to be $\alpha _\mathrm{s} (m_\mathrm{Z}) =0.1157\,(20)_\mathrm{exp}\,(29)_\mathrm{th}$. Complementary, $\alpha _\mathrm{s} (m_\mathrm{Z})$ is determined together with parton distribution functions of the proton (PDFs) from jet and inclusive DIS data measured by the H1 experiment. The value $\alpha _\mathrm{s} (m_\mathrm{Z}) =0.1142\,(28)_\mathrm{tot}$ obtained is consistent with the determination from jet data alone. The impact of the jet data on the PDFs is studied. The running of the strong coupling is tested at different values of the renormalisation scale and the results are found to be in agreement with expectations. |
| spellingShingle | Andreev, V Baghdasaryan, A Begzsuren, K Gwenlan, C Radescu, V Determination of the strong coupling constant αs(mZ) in next-to-next-to-leading order QCD using H1 jet cross section measurements: H1 Collaboration |
| title | Determination of the strong coupling constant αs(mZ) in next-to-next-to-leading order QCD using H1 jet cross section measurements: H1 Collaboration |
| title_full | Determination of the strong coupling constant αs(mZ) in next-to-next-to-leading order QCD using H1 jet cross section measurements: H1 Collaboration |
| title_fullStr | Determination of the strong coupling constant αs(mZ) in next-to-next-to-leading order QCD using H1 jet cross section measurements: H1 Collaboration |
| title_full_unstemmed | Determination of the strong coupling constant αs(mZ) in next-to-next-to-leading order QCD using H1 jet cross section measurements: H1 Collaboration |
| title_short | Determination of the strong coupling constant αs(mZ) in next-to-next-to-leading order QCD using H1 jet cross section measurements: H1 Collaboration |
| title_sort | determination of the strong coupling constant αs mz in next to next to leading order qcd using h1 jet cross section measurements h1 collaboration |
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