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Determination of proton parton distribution functions using ATLAS data
Proceeding of an ATLAS talk given during EPS-HEP 2019 (Ghent, Belgium). The deadline for proceeding submission is on the 15th October 2019.
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| Lenguaje: | eng |
| Publicado: |
SISSA
2020
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| Acceso en línea: | https://dx.doi.org/10.22323/1.364.0478 http://cds.cern.ch/record/2689522 |
| _version_ | 1780963734698590208 |
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| author | Giuli, Francesco |
| author_facet | Giuli, Francesco |
| author_sort | Giuli, Francesco |
| collection | CERN |
| description | Proceeding of an ATLAS talk given during EPS-HEP 2019 (Ghent, Belgium). The deadline for proceeding submission is on the 15th October 2019. |
| id | cern-2689522 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2020 |
| publisher | SISSA |
| record_format | invenio |
| spelling | cern-26895222022-01-14T14:54:50Zdoi:10.22323/1.364.0478http://cds.cern.ch/record/2689522engGiuli, FrancescoDetermination of proton parton distribution functions using ATLAS datahep-phParticle Physics - Experimenthep-exParticle Physics - PhenomenologyProceeding of an ATLAS talk given during EPS-HEP 2019 (Ghent, Belgium). The deadline for proceeding submission is on the 15th October 2019.Fits to determine parton distribution functions using top-antitop, inclusive $W/Z$ boson and $W^{\pm}$ boson production measurements in association with jets from ATLAS, in combination with deep-inelastic scattering data from HERA, are presented. The ATLAS $W/Z$ boson data exhibit sensitivity to the valence quark distributions and the light quark sea composition, whereas the top-quark pair production data have sensitivity to the gluon distribution. The impact of the these data is increased by fitting several distributions simultaneously, with the full information on the systematic and statistical correlations between data points. The parton distribution functions extracted using $W^{\pm}$ + jets data show an improved determination of the high-$x$ sea-quark densities, while confirming the unsuppressed strange-quark density at lower $x$ < 0.02 found by previous ATLAS analyses.Fits to determine parton distribution functions using top-antitop, inclusive $W/Z$ boson, as well as $W^{\pm}$ boson production measurements in association with jets from ATLAS, in combination with deep-inelastic scattering data from HERA, are presented. The ATLAS $W/Z$ boson data exhibit sensitivity to the valence quark distributions and the light quark sea composition, whereas the top-quark pair production data have sensitivity to the gluon distribution. The impact of the these data is increased by fitting several distributions simultaneously, with the full information on the systematic and statistical correlations between data points. The parton distribution functions extracted using $W^{\pm}$ + jets data show an improved determination of the high-$x$ sea-quark densities, while confirming the unsuppressed strange-quark density at lower $x$ < 0.02 found by previous ATLAS analyses.SISSAarXiv:1909.06702oai:cds.cern.ch:26895222020 |
| spellingShingle | hep-ph Particle Physics - Experiment hep-ex Particle Physics - Phenomenology Giuli, Francesco Determination of proton parton distribution functions using ATLAS data |
| title | Determination of proton parton distribution functions using ATLAS data |
| title_full | Determination of proton parton distribution functions using ATLAS data |
| title_fullStr | Determination of proton parton distribution functions using ATLAS data |
| title_full_unstemmed | Determination of proton parton distribution functions using ATLAS data |
| title_short | Determination of proton parton distribution functions using ATLAS data |
| title_sort | determination of proton parton distribution functions using atlas data |
| topic | hep-ph Particle Physics - Experiment hep-ex Particle Physics - Phenomenology |
| url | https://dx.doi.org/10.22323/1.364.0478 http://cds.cern.ch/record/2689522 |
| work_keys_str_mv | AT giulifrancesco determinationofprotonpartondistributionfunctionsusingatlasdata |