The strangest proton?
Nocera, Emanuele R.
The European Physical Journal C
Springer Berlin Heidelberg
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Faura, F., Iranipour, S., Nocera, E. R., Rojo, J., & Ubiali, M. (2020). The strangest proton?. The European Physical Journal C, 80 (12)https://doi.org/10.1140/epjc/s10052-020-08749-3
Abstract: 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.
Regular Article - Theoretical Physics
External DOI: https://doi.org/10.1140/epjc/s10052-020-08749-3
This record's URL: https://www.repository.cam.ac.uk/handle/1810/315471