A first measurement of the di-hadron interference fragmentation function of light quarks in pion pairs with the Belle detector is presented. The chiral odd nature of this fragmentation function allows the use as a quark polarimeter sensitive to the transverse polarization of the fragmenting quark. Therefore it can be used together with data taken at fixed target and collider experiments to extract the quark transversity distribution. A sample consisting of 711×106 di-hadron pairs was extracted from 661 fb−1 of data recorded near the Υ(4S) resonance delivered by the KEKB e+e− collider.
@article{arxiv.0912.0353,
title = {First Measurement of the Interference Fragmentation Function in $e^+e^-$ at Belle},
author = {Anselm Vossen and Ralf Seidl and Matthias Grosse-Perdekamp and Martin Leitgab and Akio Ogawa and Kieran Boyle},
journal= {arXiv preprint arXiv:0912.0353},
year = {2009}
}
Comments
Results presented at the "XIII Workshop on High Energy Spin Physics, DSPIN 09" - 9 pages, 3 figures, corrected typo in formula (2)