期刊
EUROPEAN PHYSICAL JOURNAL C
卷 80, 期 12, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-020-08749-3
关键词
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资金
- European Commission through the Marie Skodowska-Curie Action ParDHonS FFs.TMDs [752748]
- Netherlands Organization for Scientific Research (NWO)
- STFC grant [ST/L000385/1]
- Royal Society [RGF/EA/180148, DH150088]
- European Research Council under the European Union's Horizon 2020 research and innovation Programme [950246]
- STFC [ST/P000681/1, ST/J000434/1, ST/L000385/1] Funding Source: UKRI
- Marie Curie Actions (MSCA) [752748] Funding Source: Marie Curie Actions (MSCA)
- European Research Council (ERC) [950246] Funding Source: European Research Council (ERC)
We present an improved determination of the strange quark and antiquark parton distribution functions of the proton by means of a global QCD analysis that takes into account a comprehensive set of strangeness-sensitive measurements: charm-tagged cross sections for fixed-target neutrino-nucleus deep-inelastic scattering, and cross sections for inclusive gauge-boson production and W-boson production in association with light jets or charm quarks at hadron colliders. Our analysis is accurate to next-to-next-to-leading order in perturbative QCD where available, and specifically includes charm-quark mass corrections to neutrino-nucleus structure functions. We find that a good overall description of the input dataset can be achieved and that a strangeness moderately suppressed in comparison to the rest of the light sea quarks is strongly favored by the global analysis.
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