Compton scattering from the deuteron and extracted neutron polarizabilities

Summary, in English

Differential cross sections for Compton scattering from the deuteron were measured at MAX-Lab for incident photon energies of 55 and 66 MeV at nominal laboratory angles of 45degrees, 125degrees, and 135degrees. Tagged photons were scattered from liquid deuterium and detected in three NaI spectrometers. By comparing the data with theoretical calculations in the framework of a one-boson-exchange potential model, the sum and the difference of the isospin-averaged nucleon polarizabilities, alpha(N) + beta(N) = 17.4 +/- 3.7 and alpha(N) - beta(N) = 6.4 +/- 2.4 (in units of 10(-4) fm(3)), have been determined. By combining the latter with the global-averaged value for alpha(p) - beta(p) and using the predictions of the Baldin sum rule for the sum of the nucleon polarizabilities, we have obtained values for the neutron electric and magnetic polarizabilities of alpha(n) = 8.8 +/- 2.4(total) +/- 3.0(model) and beta(n) = 6.5 -/+ 2.4(total) -/+ 3.0(model), respectively.

• Author: Magnus Lundin; Jan-Olof Adler; Mark Boland; Kevin Fissum; T Glebe; Kurt Hansen; Lennart Isaksson; O Kaltschmidt; Martin Karlsson; K Kossert; MI Levchuk; Per Lilja; B Lindner; AI L'vov; Björn Nilsson; DE Oner; C Poech; S Proff; Anders Sandell; Bent Schröder; M Schumacher; DA Sims
• Department/s: MAX IV Laboratory; Nuclear physics; Medical Radiation Physics, Lund
• Publishing year: 2003
• Language: English
• Publication/Series: Physical Review Letters
• Volume: 90
• Issue: 19
• Links: http://dx.doi.org/10.1103/PhysRevLett.90.192501
• Document type: Journal article
• Publisher: American Physical Society
• Topic: Physical Sciences; Natural Sciences; Subatomic Physics
• Status: Published
• Project: Elastic and Virtual Compton Scattering and Nucleon Polarizabilities
• ISBN/ISSN/Other: ISSN: 1079-7114