Haegler, Ph. and Kirschner, R. and Schaefer, Andreas and Szymanowski, L. and Teryaev, O. V. (2001) Direct J/psi hadroproduction in k(perpendicular to) factorization and the color octet mechanism. PHYSICAL REVIEW D, 63 (7): 077501. ISSN 0556-2821
Full text not available from this repository.Abstract
The hadroproduction of direct J/psi, in the framework of the k(perpendicular to)-factorization approach is studied. The color-singlet contribution is essentially larger than in the collinear approach but is still an order of magnitude below the data. The deficit may be well described by the color octet contribution with the value of the matrix element (0 \O-8(J/psi)(S-3(1))\0) substantially decreased in comparison with fits in the collinear factorization. This should lead to a reduction of the large transverse polarization, predicted in the collinear approach.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HEAVY-QUARK PRODUCTION; P(P)OVER-BAR COLLISIONS; ROOT-S=1.8 TEV; POLARIZATION; GLUON; QCD; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 08 Feb 2022 08:09 |
| Last Modified: | 08 Feb 2022 08:09 |
| URI: | https://pred.uni-regensburg.de/id/eprint/41622 |
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