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arXiv · 1008.3543

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

Daniel Boer·Zhong-Bo Kang·Werner Vogelsang·Feng Yuan
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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/final state interaction effects in the fragmentation process and test the associated factorization.

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Daniel Boer, Zhong-Bo Kang, Werner Vogelsang, Feng Yuan. 2010-08-20. Test of the Universality of Naive-time-reversal-odd Fragmentation Functions. https://doi.org/10.1103/physrevlett.105.202001

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