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Fragmentation contribution to the transverse single-spin asymmetry in proton-proton collisions
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Within the collinear twist-3 framework, we study the single-spin asymmetry (SSA) in collisions between unpolarized protons and transversely polarized protons with focus on the fragmentation term. The fragmentation mechanism must be analyzed in detail in order to unambiguously determine the impact of various contributions to SSAs in hadron production. Such a distinction may also settle the "sign mismatch" between the transverse SSA in proton-proton collisions and the Sivers effect in semi-inclusive deep inelastic scattering. We calculate terms involving quark-quark and quark-gluon-quark correlators, which is an important step in such an investigation.
Forward citations
Cited by 3 Pith papers
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Single spin asymmetry in forward $pA$ collisions from Pomeron-Odderon interference
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Transverse Charge Distribution as a Probe of Nucleon Transversity
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Parton Distribution Functions and their Generalizations
A textbook-style introduction to the definitions, QCD properties, experimental access, and current phenomenological status of PDFs and their generalizations.
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