Capitani, S. and Goeckeler, Meinulf and Horsley, R. and Klaus, B. and Linke, V. and Rakow, P. E. L. and Schaefer, Andreas and Schierholz, G. (2000) Higher-twist contribution to pion structure function: 4-Fermi operators. NUCLEAR PHYSICS B, 570 (1-2). pp. 393-406. ISSN 0550-3213
Full text not available from this repository.Abstract
We present quenched lattice QCD results for the contribution of higher-twist operators to the lowest non-trivial moment of the pion structure function. To be specific, we consider the F-2(pi+) + F-2(pi-) - 2F(2 pi)(0) which has I = 2 and receives contributions from 4-Fermi operators only. We introduce the basis of lattice operators. The renormalization of the operators is done perturbatively in the MS scheme using the 't Hooft-Veltman prescription for gamma(5), taking particular care of mixing effects. The contribution is found to be of O(f(pi)(2)/Q(2)), relative to the leading contribution to the moment of F-2(pi+). (C) 2000 Elsevier Science B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DEEP INELASTIC-SCATTERING; WILSON FERMIONS; LATTICE QCD; structure functions; higher twist; lattice 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: | 24 May 2022 09:29 |
| Last Modified: | 24 May 2022 09:29 |
| URI: | https://pred.uni-regensburg.de/id/eprint/42734 |
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