ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 2006, vol. 96, p. -
Measurement of Azimuthal Asymmetries in Inclusive Production of Hadron Pairs in e+e- Annihilation at Belle
The Collins effect connects transverse quark spin with a measurable azimuthal dependence in the yield of hadronic fragments around the quarkâ€™s momentum vector. Using two different reconstruction methods, we find evidence of statistically significant azimuthal asymmetries for charged pion pairs in e+e- annihilation at a center-of-mass energy of 10.52Â.