Interference fragmentation functions and spin asymmetries

Details Interference fragmentation functions and spin asymmetries Interference fragmentation functions and spin asymmetries

2001-06-05

arxiv.org/abs/hep-ph/0106048v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 eps figures included, World Scientific style file included; to appear in proceedings of DIS2001, Bologna, Apr.27th

Scientific paper

A new class of fragmentation functions, arising from the interference of different hadron production channels, is analyzed. Their symmetry properties with respect to naive time-reversal transformations allow for the exploration of final-state interactions occurring during and after the hadronization. Their symmetry properties with respect to chiral transformations allow building spin asymmetries where the quark transversity distribution can be factorized out at leading twist. Explicit calculations will be shown for the interference fragmentation functions arising from final-state interactions of two pions detected in the same current jet for the case of semi-inclusive Deep-Inelastic Scattering (DIS).

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