title: Test of the universality of naive-time-reversal-odd fragmentation functions.
abstract: We investigate the "spontaneous" hyperon transverse polarization in e+ e- annihilation and semi-inclusive deep inelastic scattering processes as a test of the universality of the naive-time-reversal-odd transverse momentum dependent fragmentation functions. We find that universality implies definite sign relations among various observables. This provides a unique opportunity to study initial or final state interaction effects in the fragmentation process and test the associated factorization.
authors.affiliation: Theory Group, KVI, University of Groningen, Zernikelaan 25, NL-9747 AA Groningen, The Netherlands.
authors.forename: Daniël
authors.initials: D
authors.lastname: Boer
authors.forename: Zhong-Bo
authors.initials: ZB
authors.lastname: Kang
authors.forename: Werner
authors.initials: W
authors.lastname: Vogelsang
authors.forename: Feng
authors.initials: F
authors.lastname: Yuan