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Full-Text Articles in Quantum Physics
Proton Spin Structure From Simultaneous Monte Carlo Global Qcd Analysis, Yiyu Zhou
Proton Spin Structure From Simultaneous Monte Carlo Global Qcd Analysis, Yiyu Zhou
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Despite the great effort and achievements made towards understanding proton spin structure in the past few decades, a complete picture is still elusive. Parton distribution functions (PDFs), which in quantum chromodynamics (QCD) encode the momentum and helicity distributions of quarks and gluons inside a proton, provide the means by which to quantify the proton structure information. Being inherently nonperturbative, PDFs have to be extracted from unpolarized and polarized lepton-hadron and hadron-hadron scattering data. In particular, experiments that measure unpolarized and polarized jet observables can provide insight into the momentum and helicity distributions of gluons, which have generally been more difficult …