Zhang, Jian-Hui and Chen, Jiunn-Wei and Ji, Xiangdong and Jin, Luchang and Lin, Huey-Wen (2017) Pion distribution amplitude from lattice QCD. PHYSICAL REVIEW D, 95 (9): 094514. ISSN 2470-0010, 2470-0029
Full text not available from this repository. (Request a copy)Abstract
We present the first lattice-QCD calculation of the pion distribution amplitude using the large-momentum effective field theory (LaMET) approach, which allows us to extract light cone parton observables from a Euclidean lattice. The mass corrections needed to extract the pion distribution amplitude from this approach are calculated to all orders in m(pi)(2)/P-Zeta(2) . We also implement the Wilson-line renormalization which is crucial to remove the power divergences in this approach, and find that it reduces the oscillation at the end points of the distribution amplitude. Our exploratory result at 310-MeV pion mass favors a single-hump form broader than the asymptotic form of the pion distribution amplitude.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | EXCLUSIVE PROCESSES; EVOLUTION; NUCLEON; MESONS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 13:10 |
| Last Modified: | 28 Feb 2019 07:29 |
| URI: | https://pred.uni-regensburg.de/id/eprint/856 |
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