Model-independent effects of Delta excitation in nucleon polarizabilities
Vladimir Pascalutsa, Daniel R. Phillips
Abstract
Model-independent effects of Δ(1232) excitation on nucleon polarizabilities are computed in a Lorentz-invariant fashion. We find a large effect of relative order (MΔ- M)/M in some of the spin polarizabilities, with the backward spin polarizability receiving the largest contribution. Similar subleading effects are found to be important in the fourth-order spin-independent polarizabilities αEν, E2, Mν, and M 2. Combining our results with those for the model-independent effects of pion loops we obtain predictions for spin and fourth-order polarizabilities which compare favorably with the results of a recent dispersion-relation analysis of data.
Create a lesson
Related papers
6He structure from semiclassical 3D models based on ab initio spatial correlations
Mengyao Huang, Tobias Frederico, Peng Yin et al.
Algebraic coefficients of fractional parentage for three particles in the oscillator Jacobi basis
A. Stepšys, S. Mickevičius, D. Germanas
Effective shear viscosity from the friction term in relativistic multi-fluid hydrodynamics
Christian Spieles, Marcus Bleicher
Four-dimensional QCD equation of state with a critical surface from contours of constant entropy density
Tristan Gyure, Hitansh Shah, Lorenzo Formaggio et al.
Prospects for modelling odd and odd-odd nuclei using energy density functionals
A. V. Afanasjev, B. Bally, M. Bender et al.
Fast Monte Carlo calculation of multiple scattering in resonant neutron capture
R. M. Djilkibaev