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$\alpha_S$ from soft QCD jet fragmentation functions
We present an extraction of the QCD coupling $\alpha_s$ from the energy evolution of the first two moments (multiplicity and peak position) of the parton-to-hadron fragmentation functions at low fractional hadron momentum $z$. A fit of the experimental jet data, from $e^+e^−$ and deep-inelastic $e^{...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
SISSA
2019
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.22323/1.365.0005 http://cds.cern.ch/record/2697359 |
| _version_ | 1780964223568838656 |
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| author | Pérez-Ramos, Redamy D'Enterria, David |
| author_facet | Pérez-Ramos, Redamy D'Enterria, David |
| author_sort | Pérez-Ramos, Redamy |
| collection | CERN |
| description | We present an extraction of the QCD coupling $\alpha_s$ from the energy evolution of the first two moments (multiplicity and peak position) of the parton-to-hadron fragmentation functions at low fractional hadron momentum $z$. A fit of the experimental jet data, from $e^+e^−$ and deep-inelastic $e^{\pm}, ν-p$ collisions, to NNLO$^∗$+NNLL predictions yields $\alpha_s(m_Z)= 0.1205 \pm 0.0010 \rm{(exp)}^{+0.0022}_{−0.0000}\rm{(th)}$, in good agreement with the current $\alpha_s$ world-average value. |
| id | oai-inspirehep.net-1754435 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2019 |
| publisher | SISSA |
| record_format | invenio |
| spelling | oai-inspirehep.net-17544352022-08-10T12:20:44Zdoi:10.22323/1.365.0005http://cds.cern.ch/record/2697359engPérez-Ramos, RedamyD'Enterria, David$\alpha_S$ from soft QCD jet fragmentation functionsParticle Physics - PhenomenologyWe present an extraction of the QCD coupling $\alpha_s$ from the energy evolution of the first two moments (multiplicity and peak position) of the parton-to-hadron fragmentation functions at low fractional hadron momentum $z$. A fit of the experimental jet data, from $e^+e^−$ and deep-inelastic $e^{\pm}, ν-p$ collisions, to NNLO$^∗$+NNLL predictions yields $\alpha_s(m_Z)= 0.1205 \pm 0.0010 \rm{(exp)}^{+0.0022}_{−0.0000}\rm{(th)}$, in good agreement with the current $\alpha_s$ world-average value.SISSAoai:inspirehep.net:17544352019 |
| spellingShingle | Particle Physics - Phenomenology Pérez-Ramos, Redamy D'Enterria, David $\alpha_S$ from soft QCD jet fragmentation functions |
| title | $\alpha_S$ from soft QCD jet fragmentation functions |
| title_full | $\alpha_S$ from soft QCD jet fragmentation functions |
| title_fullStr | $\alpha_S$ from soft QCD jet fragmentation functions |
| title_full_unstemmed | $\alpha_S$ from soft QCD jet fragmentation functions |
| title_short | $\alpha_S$ from soft QCD jet fragmentation functions |
| title_sort | $\alpha_s$ from soft qcd jet fragmentation functions |
| topic | Particle Physics - Phenomenology |
| url | https://dx.doi.org/10.22323/1.365.0005 http://cds.cern.ch/record/2697359 |
| work_keys_str_mv | AT perezramosredamy alphasfromsoftqcdjetfragmentationfunctions AT denterriadavid alphasfromsoftqcdjetfragmentationfunctions |