Collins Effect from Polarized SIDIS and e+e- Data
Abstract
The recent data on the transverse single spin asymmetry AUTsin(φh+φS) from HERMES and COMPASS Collaborations are analysed within LO parton model with unintegrated parton distribution and fragmentation functions. A fit of SIDIS data from HERMES Collaboration is performed leading to the extraction of favoured and unfavoured Collins fragmentation functions. A very good description of COMPASS data is obtained. BELLE e+e- data are shown to be compatible with our estimates based on the extracted Collins fragmentation functions. Predictions for AUTsin(φh+φS) asymmetries at JLab and COMPASS operating on a proton target are given.
- Publication:
-
17th International Spin Physics Symposium
- Pub Date:
- June 2007
- DOI:
- 10.1063/1.2750849
- arXiv:
- arXiv:hep-ph/0612087
- Bibcode:
- 2007AIPC..915..584P
- Keywords:
-
- 13.88.+e;
- 13.60.Hb;
- 13.66.-a;
- Polarization in interactions and scattering;
- Total and inclusive cross sections;
- Lepton-lepton interactions;
- High Energy Physics - Phenomenology
- E-Print:
- Talk presented at SPIN2006, 4 pages, 6 figures