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Uncertainties on the determination of the strong coupling alpha_s from the energy evolution of jet fragmentation functions at low z
The QCD coupling alpha_s is determined at NLO*+NMLLA accuracy from the comparison of experimental jet data to theoretical predictions of the energy-evolution of the parton-to-hadron fragmentation function moments (multiplicity, peak, width, skewness) at low fractional hadron momentum z. From the exi...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
2014
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/j.nuclphysbps.2015.09.314 http://cds.cern.ch/record/1956022 |
| _version_ | 1780944472067014656 |
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| author | d'Enterria, David Pérez-Ramos, Redamy |
| author_facet | d'Enterria, David Pérez-Ramos, Redamy |
| author_sort | d'Enterria, David |
| collection | CERN |
| description | The QCD coupling alpha_s is determined at NLO*+NMLLA accuracy from the comparison of experimental jet data to theoretical predictions of the energy-evolution of the parton-to-hadron fragmentation function moments (multiplicity, peak, width, skewness) at low fractional hadron momentum z. From the existing e+e- and e-p jet data, we obtain alpha_s(m_Z^2) = 0.1195 +/- 0.0021 (exp.) {+0.0015}_{-0.0} (scale) at the Z mass. The uncertainties of the extracted alpha_s value are discussed. |
| id | cern-1956022 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2014 |
| record_format | invenio |
| spelling | cern-19560222021-05-04T07:18:04Zdoi:10.1016/j.nuclphysbps.2015.09.314http://cds.cern.ch/record/1956022engd'Enterria, DavidPérez-Ramos, RedamyUncertainties on the determination of the strong coupling alpha_s from the energy evolution of jet fragmentation functions at low zParticle Physics - PhenomenologyThe QCD coupling alpha_s is determined at NLO*+NMLLA accuracy from the comparison of experimental jet data to theoretical predictions of the energy-evolution of the parton-to-hadron fragmentation function moments (multiplicity, peak, width, skewness) at low fractional hadron momentum z. From the existing e+e- and e-p jet data, we obtain alpha_s(m_Z^2) = 0.1195 +/- 0.0021 (exp.) {+0.0015}_{-0.0} (scale) at the Z mass. The uncertainties of the extracted alpha_s value are discussed.arXiv:1410.4818oai:cds.cern.ch:19560222014-10-17 |
| spellingShingle | Particle Physics - Phenomenology d'Enterria, David Pérez-Ramos, Redamy Uncertainties on the determination of the strong coupling alpha_s from the energy evolution of jet fragmentation functions at low z |
| title | Uncertainties on the determination of the strong coupling alpha_s from the energy evolution of jet fragmentation functions at low z |
| title_full | Uncertainties on the determination of the strong coupling alpha_s from the energy evolution of jet fragmentation functions at low z |
| title_fullStr | Uncertainties on the determination of the strong coupling alpha_s from the energy evolution of jet fragmentation functions at low z |
| title_full_unstemmed | Uncertainties on the determination of the strong coupling alpha_s from the energy evolution of jet fragmentation functions at low z |
| title_short | Uncertainties on the determination of the strong coupling alpha_s from the energy evolution of jet fragmentation functions at low z |
| title_sort | uncertainties on the determination of the strong coupling alpha_s from the energy evolution of jet fragmentation functions at low z |
| topic | Particle Physics - Phenomenology |
| url | https://dx.doi.org/10.1016/j.nuclphysbps.2015.09.314 http://cds.cern.ch/record/1956022 |
| work_keys_str_mv | AT denterriadavid uncertaintiesonthedeterminationofthestrongcouplingalphasfromtheenergyevolutionofjetfragmentationfunctionsatlowz AT perezramosredamy uncertaintiesonthedeterminationofthestrongcouplingalphasfromtheenergyevolutionofjetfragmentationfunctionsatlowz |