Haegler, Ph. and Kirschner, R. and Schaefer, Andreas and Szymanowski, L. and Teryaev, O. V. (2001) Towards a solution of the charmonium production controversy: k(perpendicular to) factorization versus color-octet mechanism. PHYSICAL REVIEW LETTERS, 86 (8). pp. 1446-1449. ISSN 0031-9007
Full text not available from this repository.Abstract
The cross section of chi (cJ) hadroproduction is calculated in the k(perpendicular to)-factorization approach. We find a significant contribution of the chi (cl) state due to non-applicability of the Landau-Yang theorem because of off-shell gluons. The results are in agreement with data and, in contrast to the collinear factorization, show a dominance of the color-singlet part and a strong suppression of the color octet contribution. Our results could therefore lead to a solution of the long-standing controversy between the color-singlet model and the color-octet mechanism.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HEAVY-QUARK PRODUCTION; PARTON MODEL; GLUON; COLLISIONS; QCD; DECAYS; BFKL; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 15 Feb 2022 05:57 |
| Last Modified: | 15 Feb 2022 05:57 |
| URI: | https://pred.uni-regensburg.de/id/eprint/41744 |
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