• Medientyp: E-Artikel
  • Titel: Large-x power laws of parton distributions remain inconclusive
  • Beteiligte: Courtoy, Aurore; Nadolsky, Pavel M.
  • Erschienen: Sociedad Mexicana de Fisica A C, 2022
  • Erschienen in: Suplemento de la Revista Mexicana de Física
  • Sprache: Nicht zu entscheiden
  • DOI: 10.31349/suplrevmexfis.3.0308085
  • ISSN: 2683-2585
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: <jats:p>Focusing on hadron scattering at large partonic momentum fractions x, we compare nonperturbative QCD predictions for the asymptotic behavior of DIS structure functions and parton distribution functions (PDFs) to the x and Q dependence of phenomenological PDFs. In the CT18 NNLO global QCD analysis, higher-order radiative contributions and functional mimicry of PDF parametrizations result in about one unit of uncertainty in the effective powers of (1 − x) falloff of nucleon PDFs. Similar uncertainties are present in the case of the pion PDF, an object of growing interest in phenomenology.</jats:p>
  • Zugangsstatus: Freier Zugang