Investigating Neutron Polarizabilities through Compton Scattering on ${}^3$He

Abstract

We examine manifestations of neutron electromagnetic polarizabilities in coherent Compton scattering from the Helium-3 nucleus. We calculate ${\gamma }^3$He elastic scattering observables using chiral perturbation theory to next-to-leading order ($\mathcal{O}(e^{2}Q)$). We find that the unpolarized differential cross section can be used to measure neutron electric and magnetic polarizabilities, while two double-polarization observables are sensitive to different linear combinations of the four neutron spin polarizabilities. [Note added in 2018] An erratum for this paper has been posted as arXiv:1804.01206. Overall conclusions are unchanged, but quantitative results are affected appreciably.

4 pages, 4 figures; version published in Phys. Rev. Lett

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Cited by in corpus (11)

• Using effective field theory to analyse low-energy Compton scattering data from protons and light nuclei
• Compton Scattering from the Deuteron below Pion-Production Threshold
• Analyzing the Effects of Neutron Polarizabilities in Elastic Compton Scattering off ${}^3$He
• Elastic Compton Scattering from 3He and the Role of the Delta
• The chiral structure of the neutron as revealed in electron and photon scattering
• Compton scattering from ${}^4$He at the TUNL HI$\gamma$S facility
• Scattering Observables from One- and Two-Body Densities: Formalism and Application to $\gamma {}^3$He Scattering
• Electromagnetic polarizabilities of the spin-$\frac{1}{2}$ singly heavy baryons in heavy baryon chiral perturbation theory
• Nucleon Spin-Polarisabilities from Polarisation Observables in Low-Energy Deuteron Compton Scattering
• Compton Scattering from the Deuteron above Pion-Production Threshold
• Electromagnetic polarizabilities of the spin-$\frac{3}{2}$ baryons in heavy baryon chiral perturbation theory