Old and new parton distribution and fragmentation functions
arXiv:hep-ph/0101057 · doi:10.1007/s10582-001-0011-y
Abstract
A short review of problems with parton distribution functions in nucleons, non-polarized and polarized, is given. The main part is devoted to the transversity distribution its possible measurement and its first experimental probe via spin asymmetry in semi-inclusive DIS. It is argued that the proton transversity distribution could be successfully measured in future DIS experiments with {\it longitudinally} polarized target.
9 pages, latex, czjphys2.sty, 4 eps figures. Submitted at 35-th Rancontre de Moriond, March 2000 and at Praha-SPIN-2000, July 2000. To be published in Czechoslovak J. Phys. (Suppl) 51 (2001)
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