Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-01-11
Phys.Rev. D65 (2002) 094021
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, 15 figures. Figs. 11-14 changed, minor changes in discussion, few typos fixed and some references added. Final versi
Scientific paper
10.1103/PhysRevD.65.094021
We predict the features of the Collins function, which describes the fragmentation of a transversely polarized quark into an unpolarized hadron, by modeling the fragmentation process at a low energy scale. We use the chiral invariant approach of Manohar and Georgi, where constituent quarks and Goldstone bosons are considered as effective degrees of freedom in the non-perturbative regime of QCD. To test the approach we calculate the unpolarized fragmentation function and the transverse momentum distribution of a produced hadron, both of which are described reasonably well. In the case of semi-inclusive deep-inelastic scattering, our estimate of the Collins function in connection with the transversity distribution gives rise to a transverse single spin asymmetry of the order of 10%, supporting the idea of measuring the transversity distribution of the nucleon in this way. In the case of e+ e- annihilation into two hadrons, our model predicts a Collins azimuthal asymmetry of about 5%.
Bacchetta Alessandro
Kundu Rajen
Metz Andreas
Mulders Piet J.
No associations
LandOfFree
Estimate of the Collins fragmentation function in a chiral invariant approach does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Estimate of the Collins fragmentation function in a chiral invariant approach, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Estimate of the Collins fragmentation function in a chiral invariant approach will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-279281