2008/12/31 by Deepshikha Shukla, A. Nogga, Andreas Nogga +1
Chemistry · Physics and Astronomy · #Advanced NMR Techniques and Applications #Atomic physics #Chemistry #Compton scattering #Elastic scattering #Electron #Neutron #Nuclear physics #Nuclear physics research studies #Observable #Physics #Polarization (electrochemistry) #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Scattering #nucl-th
paper · pdf · doi:10.1016/j.nuclphysa.2009.01.003
40 pages, 16 figures
openalex publication_date 2009/01/14 · arxiv created 2018/04/05 · arxiv updated 2018/04/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Motivated by the fact that a polarized 3He nucleus behaves as an `effective' neutron target, we examine manifestations of neutron electromagnetic polarizabilities in elastic Compton scattering from the Helium-3 nucleus. We calculate both unpolarized and double-polarization observables using chiral perturbation theory to next-to-leading order (\mathcal O(e2 Q)) at energies, ω≤ mπ, where mπ is the pion mass. Our results show 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] The qualitative conclusions and analytic formulae presented in this paper are correct, but several of the numerical results are wrong: see the erratum posted as arXiv:1804.01206 for further details. A full suite of corrected numerical results for cross sections and asymmetries can be found in Margaryan et al., arXiv:1804.00956. They can also be obtained as an interactive Mathematica notebook by emailing [email protected].