Zhang, Rui and Chen, Jiunn-Wei and Jin, Luchang and Lin, Huey-Wen and Schaefer, Andreas and Sun, Peng and Yang, Yi-Bo and Zhang, Jian-Hui and Zhao, Yong (2019) Kaon distribution amplitude from lattice QCD and the flavor SU(3) symmetry. NUCLEAR PHYSICS B, 939. pp. 429-446. ISSN 0550-3213, 1873-1562
Full text not available from this repository. (Request a copy)Abstract
We present the first lattice-QCD calculation of the kaon distribution amplitude using the large-momentum effective theory (LaMET) approach. The momentum-smearing technique has been implemented to improve signals at large meson momenta. We subtract the power divergence due to Wilson line to high precision using multiple lattice spacings. The kaon structure clearly shows an asymmetry of the distribution amplitude around x = 1/2, a clear sign of its skewness. Our result also prefers a broader distribution than the asymptotic form. We also study the leading SU(3) flavor symmetry breaking relations for the pion, kaon and eta meson distribution amplitudes, and the results are consistent with the prediction from chiral perturbation theory. (C) 2018 The Author(s). Published by Elsevier B.V.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | EXCLUSIVE PROCESSES; PARTON; FACTORIZATION; DECAYS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 22 Apr 2020 08:25 |
| Last Modified: | 22 Apr 2020 08:25 |
| URI: | https://pred.uni-regensburg.de/id/eprint/27674 |
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