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Compton scattering from the deuteron below pion-production threshold.

Authors :
Myers, L. S.
Annand, J. R. M.
Brudvik, J.
Feldman, G.
Fissum, K. G.
Grießhammer, H. W.
Hansen, K.
Henshaw, S. S.
Isaksson, L.
Jebali, R.
Kovash, M. A.
Lundin, M.
Middleton, D. G.
Nathan, A. M.
Schröder, B.
Stave, S. C.
Source :
Physical Review C: Nuclear Physics. Aug2015, Vol. 92 Issue 2, p025203-1-025203-12. 12p.
Publication Year :
2015

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 60°, 120°, and 150°. 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 αs=[12.1±0.8(stat)±0.2(BSR)±0.8(th)]××10-4fm3 and βs=[2.4±0.8(stat)±0.2(BSR)±0.8(th)]×10-4fm3 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. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
05562813
Volume :
92
Issue :
2
Database :
Academic Search Index
Journal :
Physical Review C: Nuclear Physics
Publication Type :
Academic Journal
Accession number :
109944008
Full Text :
https://doi.org/10.1103/PhysRevC.92.025203