Compton Scattering from the Deuteron below Pion-Production Threshold

Abstract

Differential cross sections for elastic scattering of photons from the deuteron have recently been measured at the Tagged-Photon Facility at the MAX IV Laboratory in Lund, Sweden. These first new measurements in more than a decade further constrain the isoscalar electromagnetic polarizabilities of the nucleon and provide the first-ever results above 100 MeV, where the sensitivity to the polarizabilities is increased. We add 23 points between 70 and 112 MeV, at angles 60deg, 120deg and 150deg. Analysis of these data using a Chiral Effective Field Theory indicates that the cross sections are both self-consistent and consistent with previous measurements. Extracted values of α_s = [12.1 +/- 0.8(stat) +/- 0.2(BSR) +/- 0.8(th)] X 10^{-4} fm^3 and β_s = [2.4 +/- 0.8(stat) +/- 0.2(BSR) +/- 0.8(th)] X 10^{-4} fm^3 are obtained from a fit to these 23 new data points. This paper presents in detail the experimental conditions and the data analysis used to extract the cross sections.

13 pages, 8 figures, to be submitted to Physical Review C

References in corpus (6)

• Using effective field theory to analyse low-energy Compton scattering data from protons and light nuclei
• Proton polarisability contribution to the Lamb shift in muonic hydrogen at fourth order in chiral perturbation theory
• The Electromagnetic Self-Energy Contribution to M_p - M_n and the Isovector Nucleon Magnetic Polarizability
• Compton scattering from the proton in an effective field theory with explicit Delta degrees of freedom
• New Measurement of Compton Scattering from the Deuteron and an Improved Extraction of the Neutron Electromagnetic Polarizabilities
• Compton Scattering from \nuc{6}{Li} at 86 MeV

Cited by in corpus (10)

• Nuclear effective field theory: status and perspectives
• Nucleon Polarisabilities at and Beyond Physical Pion Masses
• Designing Optimal Experiments: An Application to Proton Compton Scattering
• Cottingham formula and nucleon polarizabilities
• Near-threshold ${\pi }^{-}$ photoproduction on the deuteron
• Chiral Effective Theory Methods and their Application to the Structure of Hadrons from Lattice QCD
• Elastic Compton Scattering from 3He and the Role of the Delta
• 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
• Compton Scattering from the Deuteron above Pion-Production Threshold