Realistic estimate of valence transversity distributions from inclusive dihadron production
Abstract
We present an updated extraction of the transversity parton distribution based on the analysis of pion-pair production in deep-inelastic scattering off transversely polarized targets in collinear factorization. Data for proton and deuteron targets make it possible to perform a flavor separation of the valence components of the transversity distribution, using di-hadron fragmentation functions taken from the semi-inclusive production of two pion pairs in back-to-back jets in e+e- annihilation. The e+e- data from Belle have been reanalyzed using the replica method and a more realistic estimate of the uncertainties on the chiral-odd interference fragmentation function has been obtained. Then, the transversity distribution has been extracted by using the most recent and more precise COMPASS data for deep-inelastic scattering off proton targets. Our results represent the most accurate estimate of the uncertainties on the valence components of the transversity distribution currently available.
Keywords
Cite
@article{arxiv.1503.03495,
title = {Realistic estimate of valence transversity distributions from inclusive dihadron production},
author = {Marco Radici and A. Courtoy and Alessandro Bacchetta and Marco Guagnelli},
journal= {arXiv preprint arXiv:1503.03495},
year = {2015}
}
Comments
24 pages, 11 figures of which 7 have two panels; figs. 8a,8b,9a,9b updated with latest results from Ref.[5]; JHEP style file provided