Test of the Universality of Naive-time-reversal-odd Fragmentation Functions

Details Test of the Universality of Naive-time-reversal-odd Fragmentation Functions Test of the Universality of Naive-time-reversal-odd Fragmentation Functions

2010-08-20

arxiv.org/abs/1008.3543v1

Phys.Rev.Lett.105:202001,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.105.202001

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/final state interaction effects in the fragmentation process and test the associated factorization.

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