Musatov, I. V. and Teryaev, O. V. and Schäfer, Andreas (1998) Elastic contribution to the Burkhardt-Cottingham and generalized Gerasimov-Drell-Hearn sum rules. PHYSICAL REVIEW D, 57 (11). pp. 7041-7044. ISSN 0556-2821
Full text not available from this repository.Abstract
The elastic contribution to the first moment of g(2)(x, Q(2)) is analyzed using a Drell-Yan-West-type relation and is shown to be negative. For a qualitative estimate the one-loop contributions to the polarized DIS sum rules in QED are studied. The behavior of the generalized Gerasimov-Drell-Hearn (GDH) sum rule is sensitive to infrared regularization. With a lower threshold for the gluon virtuality the relation of the generalized GDH sum rule to the Burkhardt-Cottingham sum rule is studied. We conclude that the elastic part has to be included for long range interactions but can be consistently discarded for short-range interactions.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | QCD; Q2 |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 24 Feb 2023 07:34 |
| Last Modified: | 24 Feb 2023 07:34 |
| URI: | https://pred.uni-regensburg.de/id/eprint/49795 |
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