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arXiv · 1802.05212

First Extraction of Transversity from a Global Analysis of Electron-Proton and Proton-Proton Data

Marco Radici·Alessandro Bacchetta
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Abstract

We present the first extraction of the transversity distribution in the framework of collinear factorization based on the global analysis of pion-pair production in deep-inelastic scattering off transversely polarized targets and in proton-proton collisions with one transversely polarized proton. The extraction relies on the knowledge of di-hadron fragmentation functions, which are taken from the analysis of electron-positron annihilation data. For the first time, the chiral-odd transversity is extracted from a global analysis similar to what is usually done for the chiral-even spin-averaged and helicity distributions. The knowledge of transversity is important for, among other things, detecting possible signals of new physics in high-precision low-energy experiments.

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Marco Radici, Alessandro Bacchetta. 2018-02-14. First Extraction of Transversity from a Global Analysis of Electron-Proton and Proton-Proton Data. https://doi.org/10.1103/physrevlett.120.192001

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