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Brodsky, Stanley J; Gardner, Susan
Physical review letters, 01/2016, Letnik: 116, Številka: 1Journal Article
Intrinsic heavy quarks in hadrons emerge from the non-perturbative structure of a hadron bound state and are a rigorous prediction of QCD. Lattice QCD calculations indicate significant intrinsic charm and strangeness probabilities. Since the light-front momentum distribution of the Fock states is maximal at equal rapidity, intrinsic heavy quarks carry significant fractions of the hadron momentum. The presence of Fock states with intrinsic strange, charm, or bottom quarks in hadrons lead to an array of novel physics phenomena. Accurate determinations of the heavy-quark distributions in the proton are needed to interpret Tevatron and LHC measurements as probed of physics beyond the Standard Model.
