Kivel, N. (2002) Hard electroproduction of mesons: Helicity flip amplitudes with tensor gluon contributions. PHYSICAL REVIEW D, 65 (5): 054010. ISSN 2470-0010, 2470-0029
Full text not available from this repository.Abstract
We consider hard electroproduction of mesons at the twist-3 level and focus our attention on helicity flip amplitudes corresponding to the production of transversely polarized mesons by transverse photons. We demonstrate that the helicity-flip amplitude for the transversely polarized particles is closely related to the contributions of the matrix elements of the tensor gluon operator which can serve as a pure gluonic probe of the hadrons. Using the standard factorization approach and the Wandzura-Wilczek approximation for the twist-3 matrix elements we find that such amplitudes do not have divergencies from the end point regions which appear in the other twist-3 amplitudes.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | NONFORWARD PARTON DISTRIBUTIONS; EXCLUSIVE ELECTROPRODUCTION; VECTOR-MESONS; DIFFRACTIVE ELECTROPRODUCTION; NUCLEON; QUARK; QCD; POLARIZATION; PHOTONS; PIONS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 09 Nov 2021 07:07 |
| Last Modified: | 09 Nov 2021 07:07 |
| URI: | https://pred.uni-regensburg.de/id/eprint/40570 |
Actions (login required)
 |
View Item |
