Nucleon Electric Polarizabilities and Nucleon-Pion Scattering at the Physical Pion Mass
We present a lattice QCD calculation of the nucleon electric polarizabilities at the physical pion mass. Our findings reveal the substantial contributions of the Nπ states to these polarizabilities. Without considering these contributions, the lattice results fall significantly below the experimental values, consistent with previous lattice studies. This observation has motivated us to compute both the parity-negative Nπ scattering up to a nucleon momentum of ∼0.5 GeV in the center-of-mass frame and corresponding Nγ^{*}→Nπ matrix elements using lattice QCD. Our results confirm that incorporating dynamic Nπ contributions is crucial for a reliable determination of the polarizabilities from lattice QCD. This methodology lays the groundwork for future lattice QCD investigations into various other polarizabilities.
Authors
- Xuan-He Wang
- Xu Feng (ORCID: https://orcid.org/0000-0002-0856-0649)
- Luchang Jin (ORCID: https://orcid.org/0000-0003-0806-4183)
- Zhao-Long Zhang (ORCID: https://orcid.org/0009-0005-5706-8289)
- Xiong-Hui Cao (ORCID: https://orcid.org/0000-0003-1365-7178)
- Chuan Liu (ORCID: https://orcid.org/0000-0003-4497-6868)
- Yu-Sheng Gao
- C. Fan (ORCID: https://orcid.org/0009-0008-2772-7070)
Institutions
- Chinese Academy of Sciences (CN)
- Brookhaven National Laboratory (US)
- Peking University (CN)
- Institute of Theoretical Physics (CN)
- Collaborative Innovation Center of Quantum Matter (CN)
- RIKEN BNL Research Center (US)
Publication Details
- Journal
- Physical Review Letters
- Published
- 2024-09-30
- DOI
- https://doi.org/10.1103/physrevlett.133.141901
- Citations
- 8
- Primary Topic
- Quantum Chromodynamics and Particle Interactions
- Type
- article
- Field-Weighted Citation Impact
- 5.28
Funders
- U.S. Department of Energy
- National Natural Science Foundation of China
- China Postdoctoral Science Foundation
- National Key Research and Development Program of China