First Measurement of the Interference Fragmentation Function in $e^+e^-$ at Belle

Details First Measurement of the Interference Fragmentation Function in $e^+e^-$ at Belle First Measurement of the Interference Fragmentation Function in $e^+e^-$ at Belle

2009-12-02

arxiv.org/abs/0912.0353v2

Physics

High Energy Physics

High Energy Physics - Experiment

Results presented at the "XIII Workshop on High Energy Spin Physics, DSPIN 09" - 9 pages, 3 figures, corrected typo in formula

Scientific paper

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 $711 \times 10^6$ di-hadron pairs was extracted from 661 $fb^{-1}$ of data recorded near the $\Upsilon(4S)$ resonance delivered by the KEKB $e^+$$e^{-}$ collider.

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