Garzia, I. (2012) Study of Collins asymmetries at BaBar. Il nuovo cimento C, 35 (2). pp. 79-84. ISSN 1826-9885
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Abstract
Transversity distribution describes the quark transverse polarization inside a transversely polarized nucleon. It is the less known leading-twist 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 the preliminary results of the measurement of the azimuthal asymmetries in the process e+e− → qq → ππX, where the two pions are produced in opposite hemispheres. These preliminary results are based on a data sample of about 45 fb−1, collected by the BABAR experiment at a center-of-mass energy of 10.54GeV, and are compared with the Belle measurements.
| 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: | 16 Apr 2020 16:52 |
| Last Modified: | 16 Apr 2020 16:52 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/17738 |
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