Résumé
The interference fragmentation function translates the fragmentation of a quark with a transverse projection of the spin into an azimuthal asymmetry of two final-state hadrons. In e +e - annihilation the product of two interference fragmentation functions is measured. We report nonzero asymmetries for pairs of charge-ordered π +π - pairs, which indicate a significant interference fragmentation function in this channel. The results are obtained from a 672fb -1 data sample that contains 711×106 π +π - pairs and was collected at and near the Υ(4S) resonance, with the Belle detector at the KEKB asymmetric-energy e +e - collider.
| langue originale | Anglais |
|---|---|
| Numéro d'article | 072004 |
| journal | Physical Review Letters |
| Volume | 107 |
| Numéro de publication | 7 |
| Les DOIs | |
| état | Publié - 12 août 2011 |
| Modification externe | Oui |
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Examiner les sujets de recherche de « Observation of transverse polarization asymmetries of charged pion pairs in e +e - annihilation near √s=10.58GeV ». Ensemble, ils forment une empreinte digitale unique.Contient cette citation
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