Single spin asymmetries in polarized proton-proton, polarized antiproton-proton inclusive processes

M. Anselmino; M. Boglione; F. Murgia

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arXiv · hep-ph/9810228

Single spin asymmetries in polarized proton-proton, polarized antiproton-proton inclusive processes

M. Anselmino·M. Boglione·F. Murgia

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Abstract

Single spin asymmetries in polarized proton(antiproton) + proton -> pion + X have been measured to be large. They can be understood within perturbative QCD by introducing new k_perp and spin dependences in fragmentation and/or distribution functions. We discuss first how these effects in distribution functions alone can account for existing data and predict single spin asymmetries in other processes; then we see how similar effects in fragmentation functions alone can fit the existing data; finally we devise strategies to discriminate between the two contributions

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M. Anselmino, M. Boglione, F. Murgia. 1998-10-02. Single spin asymmetries in polarized proton-proton, polarized antiproton-proton inclusive processes. https://arxiv.org/abs/hep-ph/9810228

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