Abstract
New fragmentation functions (FFs) are extracted from a NLO QCD fit to the preliminary COMPASS data on pion and kaon multiplicities. It is shown that the new kaon FFs are very different from those of De Florian et al. (DSS) and Hirai et al. (HKNS). The sensitivity of the extracted polarized PDFs to the new FFs is discussed.
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This research was supported by the JINR-Bulgaria Collaborative Grant and the RFBR Grants (nos. 10-02-01259 and 11-01-00182).
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Leader, E., Sidorov, A.V. & Stamenov, D.B. Importance of fragmentation functions in determining polarized parton densities. Phys. Part. Nuclei 45, 43–45 (2014). https://doi.org/10.1134/S1063779614010602
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DOI: https://doi.org/10.1134/S1063779614010602