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The Strangest Proton?
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abstract
We present an improved determination of the strange quark and anti-quark 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.
Forward citations
Cited by 3 Pith papers
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Neutrino Fluxes at a Muon Collider
The neutrino flux around a 10 TeV muon collider is about 120 times higher than earlier estimates, with non-negligible additional sources from showers, rock interactions, and collisions.
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Charm physics
A review chapter summarizing the theoretical framework and experimental status of charm hadron lifetimes, D0 mixing, CP violation, and rare decays.
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Neutrino Physics and Astrophysics at Colliders
A review of collider neutrino experiments, covering first FASERv and SND@LHC measurements, FPF prospects for neutrino cross sections, new physics searches, and astrophysics applications.
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