Journal
PHYSICAL REVIEW D
Volume 95, Issue 9, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.95.094514
Keywords
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Funding
- Office of Science of the U.S. Department of Energy
- National Energy Research Scientific Computing Center
- Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231]
- U.S. Department of Energy [DE-FG02-93ER-40762]
- Office of Science and Technology in Shanghai Municipal Government [11DZ2260700]
- National Science Foundation of China [11175114, 11405104, 11655002]
- DFG [SCHA 458/20-1]
- Hadron Physics from LatticeQCD [SFB/TRR-55]
- MIT MISTI program
- Ministry of Science and Technology, Taiwan [105-2112-M-002-017-MY3, 105-2918-I-002-003]
- CASTS of NTU
- U.S. Department of Energy, Office of Science, Office of Nuclear Physics
- Department of Energy, Laboratory Directed Research and Development (LDRD) [DE-SC0012704]
- BNL
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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.
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