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EnglishWe report on the extraction of dihadron fragmentation functions (DiFF) from the semi-inclusive production of two hadron pairs in back-to-back jets in e+e- annihilation. A nonzero asymmetry in the correlation of azimuthal orientations of opposite π+ π- pairs is related to the transverse polarization of fragmenting quarks through a significant polarized DiFF. A combined analysis of this asymmetry and the spin asymmetry in the SIDIS process ep↑ → e′(π+π -)X has led to the first extraction of the u and d-flavor transversity parton distribution function in the framework of collinear factorization.
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| Titolo: | Status on the transversity parton distribution: the dihadron fragmentation functions way | |
| Autori: | ||
| Data di pubblicazione: | 2012 | |
| Rivista: | ||
| Abstract: | We report on the extraction of dihadron fragmentation functions (DiFF) from the semi-inclusive production of two hadron pairs in back-to-back jets in e+e- annihilation. A nonzero asymmetry in the correlation of azimuthal orientations of opposite π+ π- pairs is related to the transverse polarization of fragmenting quarks through a significant polarized DiFF. A combined analysis of this asymmetry and the spin asymmetry in the SIDIS process ep↑ → e′(π+π -)X has led to the first extraction of the u and d-flavor transversity parton distribution function in the framework of collinear factorization. | |
| Handle: | http://hdl.handle.net/11571/724435 | |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
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