Bali, G. S. and Braun, V. M. and Goeckeler, M. and Gruber, M. and Hutzler, F. and Korcyl, P. and Lang, B. and Schaefer, A. (2017) Second moment of the pion distribution amplitude with the momentum smearing technique. PHYSICS LETTERS B, 774. pp. 91-97. ISSN 0370-2693, 1873-2445
Full text not available from this repository. (Request a copy)Abstract
Using the second moment of the pion distribution amplitude as an example, we investigate whether lattice calculations of matrix elements of local operators involving covariant derivatives may benefit from the recently proposed momentum smearing technique for hadronic interpolators. Comparing the momentum smearing technique to the traditional Wuppertal smearing we find-at equal computational cost-a considerable reduction of the statistical errors. The present investigation was carried out using N-f = 2+ 1 dynamical non-perturbatively order a improved Wilson fermions on lattices of different volumes and pion masses down to 220 MeV. (c) 2017 The Author(s). Published by Elsevier B.V.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | LATTICE QCD; MASS; Lattice QCD; Pion wave function |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics Physics > Institute of Theroretical Physics > Chair Professor Braun > Group Vladimir Braun Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Gunnar Bali |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 13:19 |
| Last Modified: | 18 Feb 2019 12:57 |
| URI: | https://pred.uni-regensburg.de/id/eprint/1852 |
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