Spin dependent fragmentation function at Belle
Abstract
The measurement of the so far unknown chiral-odd quark transverse spin distribution in either semi-inclusive DIS (SIDIS) or inclusive measurements in pp collisions at RHIC has an additional chiral-odd fragmentation function appearing in the cross section. These chiral-odd fragmentation functions (FF) can for example be the so-called Collins FF or the Interference FF. HERMES has given a first hint that these FFs are nonzero, however in order to measure the transversity one needs these FFs to be precisely known. We have used 29.0 fb of data collected by the Belle experiment at the KEKB collider to measure azimuthal asymmetries for different charge combinations of pion pairs and thus access the Collins FF.
Keywords
Cite
@article{arxiv.hep-ex/0607014,
title = {Spin dependent fragmentation function at Belle},
author = {A. Ogawa and M. Grosse-Perdekamp and R. Seidl and K. Hasuko},
journal= {arXiv preprint arXiv:hep-ex/0607014},
year = {2019}
}
Comments
Results presented at the DIS 2006 conference in Tsukuba, Japan