Garzia, I. (2011) Measurement of Collins asymmetries in the inclusive production of pion pairs in electron-positron collisions at BaBar. Il nuovo cimento C, 34 (6). pp. 49-51. ISSN 1826-9885
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Abstract
Transversity distribution describes the quark transverse polarization inside a transversely polarized nucleon. It is the last leading-twist missing piece of the QCD description of the partonic structure of the nucleon. Transversity can be extracted from semi-inclusive deep inelastic scattering (SIDIS) where, however, it couples to a new, unknown fragmentation function, called Collins function. We present a measurement of the azimuthal asymmetries in the process e+e− → q¯q → ππX, where the two pions are produced in opposite hemispheres, based on a data sample collected by the BaBar experiment at a center-of-mass energy of about 10.6GeV. The Collins function is extracted from the measured asymmetries.
| Item Type: | Article |
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| Uncontrolled Keywords: | Hadron production in e−e+ interactions ; Fragmentation into hadrons |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 10 Apr 2020 14:26 |
| Last Modified: | 10 Apr 2020 14:26 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/17506 |
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