First Extraction of Transversity from a Global Analysis of Electron-Proton and Proton-Proton Data
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 and in proton-proton collisions with a transversely polarized proton. The extraction relies on the knowledge...
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Veröffentlicht in: | Physical review letters 2018-05, Vol.120 (19), p.192001-192001, Article 192001 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | 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 and in proton-proton collisions with a transversely polarized proton. The extraction relies on the knowledge of dihadron fragmentation functions, which are taken from the analysis of electron-positron annihilation data. For the first time, the transversity is extracted from a global analysis similar to what is usually done for the 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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ISSN: | 0031-9007 1079-7114 |
DOI: | 10.1103/physrevlett.120.192001 |