Braun, Vladimir M. and Goeckeler, M. and Horsley, R. and Perlt, H. and Pleiter, D. and Rakow, P. E. L. and Schierholz, G. and Schiller, A. and Schroers, W. and Stueben, H. and Zanotti, J. M. (2006) Moments of pseudoscalar meson distribution amplitudes from the lattice. PHYSICAL REVIEW D, 74 (7): 074501. ISSN 2470-0010, 2470-0029
Full text not available from this repository.Abstract
Based on lattice simulations with two flavors of dynamical, O(a)-improved Wilson fermions we present results for the first two moments of the distribution amplitudes of pseudoscalar mesons at several values of the valence quark masses. By extrapolating our results to the physical masses of up/down and strange quarks, we find the first two moments of the K+ distribution amplitude and the second moment of the pi(+) distribution amplitude. We use nonperturbatively determined renormalization coefficients to obtain results in the (MS) over bar scheme. At a scale of 4 GeV2 we find a(2)(pi)=0.201(114) for the second Gegenbauer moment of the pion's distribution amplitude, while for the kaon, a(1)(K)=0.0453(9)(29) and a(2)(K)=0.175(18)(47).
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PION DIFFRACTIVE DISSOCIATION; HADRONIC FORM-FACTORS; CONE WAVE-FUNCTION; QUANTUM CHROMODYNAMICS; EXCLUSIVE PROCESSES; 2ND MOMENT; ASYMPTOTIC-BEHAVIOR; NONPERTURBATIVE RENORMALIZATION; COMPOSITE-OPERATORS; QCD FACTORIZATION; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Braun > Group Vladimir Braun |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 25 Jan 2021 15:30 |
| Last Modified: | 25 Jan 2021 15:30 |
| URI: | https://pred.uni-regensburg.de/id/eprint/33992 |
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