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25 April 2024

» arxiv » nucl-ex/0204014

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Compton Scattering from the Deuteron and Extracted Neutron Polarizabilities
M. Lundin ; J.-O. Adler ; M. Boland ; K. Fissum ; T. Glebe ; K. Hansen ; L. Isaksson ; O. Kaltschmidt ; M. Karlsson ; K. Kossert ; M.I. Levchuk ; P. Lilja ; B. Lindner ; A.I. L’vov ; B. Nilsson ; D.E. Oner ; C. Poech ; S. Proff ; A. Sandell ; B. Schröder ; M. Schumacher ; D.A. Sims ;
Date:	27 Apr 2002
Journal:	Phys.Rev.Lett. 90 (2003) 192501
Subject:	nucl-ex
Abstract:	Differential cross sections for Compton scattering from the deuteron were measured at MAX-lab for incident photon energies of 55 MeV and 66 MeV at nominal laboratory angles of $45^circ$, $125^circ$, and $135^circ$. 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 difference of the isospin-averaged nucleon polarizabilities, $alpha_N + eta_N = 17.4 pm 3.7$ and $alpha_N - eta_N = 6.4 pm 2.4$ (in units of $10^{-4}$ fm$^3$), have been determined. By combining the latter with the global-averaged value for $alpha_p - eta_p$ 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 $alpha_n= 8.8 pm 2.4$(total) $pm 3.0$(model) and $eta_n = 6.5 mp 2.4$(total) $mp 3.0$(model), respectively.
Source:	arXiv, nucl-ex/0204014
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