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Near-threshold deuteron photodisintegration: An indirect determination of the Gerasimov-Drell-Hearn sum rule and forward spin polarizability (γ0) for the deuteron at low energies

Publication ,  Journal Article
Ahmed, MW; Blackston, MA; Perdue, BA; Tornow, W; Weller, HR; Norum, B; Sawatzky, B; Prior, RM; Spraker, MC
Published in: Physical Review C - Nuclear Physics
April 24, 2008

It is shown that a measurement of the analyzing power obtained with linearly polarized γ-rays and an unpolarized target can provide an indirect determination of two physical quantities. These are the Gerasimov-Drell-Hearn (GDH) sum rule integrand for the deuteron and the sum rule integrand for the forward spin polarizability (γ0) near photodisintegration threshold. An analysis of data for the d(γ→,n)p reaction and other experiments is presented. A fit to the world data analyzed in this manner gives a GDH integral value of -603±43μb between the photodisintegration threshold and 6 MeV. This result is the first confirmation of the large contribution of the 1S0(M1) transition predicted for the deuteron near photodisintegration threshold. In addition, a sum rule value of 3.75±0.18 fm4 for γ0 is obtained between photodisintegration threshold and 6 MeV. This is a first indirect confirmation of the leading-order effective field theory prediction for the forward spin-polarizability of the deuteron. © 2008 The American Physical Society.

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Published In

Physical Review C - Nuclear Physics

DOI

EISSN

1089-490X

ISSN

0556-2813

Publication Date

April 24, 2008

Volume

77

Issue

4

Related Subject Headings

  • Nuclear & Particles Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

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Ahmed, M. W., Blackston, M. A., Perdue, B. A., Tornow, W., Weller, H. R., Norum, B., … Spraker, M. C. (2008). Near-threshold deuteron photodisintegration: An indirect determination of the Gerasimov-Drell-Hearn sum rule and forward spin polarizability (γ0) for the deuteron at low energies. Physical Review C - Nuclear Physics, 77(4). https://doi.org/10.1103/PhysRevC.77.044005
Ahmed, M. W., M. A. Blackston, B. A. Perdue, W. Tornow, H. R. Weller, B. Norum, B. Sawatzky, R. M. Prior, and M. C. Spraker. “Near-threshold deuteron photodisintegration: An indirect determination of the Gerasimov-Drell-Hearn sum rule and forward spin polarizability (γ0) for the deuteron at low energies.” Physical Review C - Nuclear Physics 77, no. 4 (April 24, 2008). https://doi.org/10.1103/PhysRevC.77.044005.
Ahmed MW, Blackston MA, Perdue BA, Tornow W, Weller HR, Norum B, et al. Near-threshold deuteron photodisintegration: An indirect determination of the Gerasimov-Drell-Hearn sum rule and forward spin polarizability (γ0) for the deuteron at low energies. Physical Review C - Nuclear Physics. 2008 Apr 24;77(4).
Ahmed, M. W., et al. “Near-threshold deuteron photodisintegration: An indirect determination of the Gerasimov-Drell-Hearn sum rule and forward spin polarizability (γ0) for the deuteron at low energies.” Physical Review C - Nuclear Physics, vol. 77, no. 4, Apr. 2008. Scopus, doi:10.1103/PhysRevC.77.044005.
Ahmed MW, Blackston MA, Perdue BA, Tornow W, Weller HR, Norum B, Sawatzky B, Prior RM, Spraker MC. Near-threshold deuteron photodisintegration: An indirect determination of the Gerasimov-Drell-Hearn sum rule and forward spin polarizability (γ0) for the deuteron at low energies. Physical Review C - Nuclear Physics. 2008 Apr 24;77(4).

Published In

Physical Review C - Nuclear Physics

DOI

EISSN

1089-490X

ISSN

0556-2813

Publication Date

April 24, 2008

Volume

77

Issue

4

Related Subject Headings

  • Nuclear & Particles Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics