Nucleon Electric Polarizabilities and Nucleon-Pion Scattering at the Physical Pion Mass
Year: 2024
Type: article
Abstract: 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.
Source: Physical Review Letters
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,750
Awards: G1829721920, LATTICE CALCULATION OF THE QED CORRECTIONS TO MESON LEPTONIC DECAY, G2505060883, LATTICE CALCULATION OF THE QED CORRECTIONS TO MESON LEPTONIC DECAY, G361076906, THEORETICAL HIGH ENERGY AND PARTICLE PHYSICS, G4352502744, G4519729187, G5658980817, G5709128245, G6129638170, G6195246144, G7389863391, THEORETICAL HIGH ENERGY AND PARTICLE PHYSICS, G8012663038, G8331661562, G8776819963
OpenAlex ID: W4402983682