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Gluon poles and photon distribution amplitudes in Drell-Yan-like processes
classification
✦ hep-ph
keywords
nucleonamplitudeschiral-odddistributiongluonphotonpolesasymmetry
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We calculate the hadron tensor related to the photon-induced Drell-Yan process, with incoming nucleon being transversally polarised. We predict the new single spin asymmetry which probes gluon poles and which is expressed in terms of photon (both chiral-odd and chiral-even) distribution amplitudes and chiral-odd nucleon function stemming from the nucleon transverse polarization.
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