Nucleon polarizabilities from low-energy Compton scattering

S. R. Beane, M. Malheiro, J. A. McGovern, D. R. Phillips, Ubirajara Van Kolck

Research output: Contribution to journalArticle

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Abstract

An effective field theory is used to give a model-independent description of Compton scattering at energies comparable to the pion mass. The amplitudes for scattering on the proton and the deuteron, calculated to fourth order in small momenta in chiral perturbation theory, contain four undetermined parameters that are in one-to-one correspondence with the nucleon polarizabilities. These polarizabilities are extracted from fits to data on elastic photon scattering on hydrogen and deuterium. For the proton we find: αp = (12.1 ± 1.1)-0.5+0.5 × 10-4 fm3, βp= (3.4 ± 1.1) -0.1+0.1 × 10-4 fm3. For the isoscalar polarizabilities we obtain: αN = (9.0 ± 1.5)-0.8+3.6 × 10-4 fm3, βN = (1.7 ± 1.5)-0.6+1.4 × 10-4 fm3.

Original languageEnglish (US)
Pages (from-to)200-206
Number of pages7
JournalPhysics Letters B
Volume567
Issue number3-4
DOIs
StatePublished - Aug 14 2003

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scattering
protons
deuterons
energy
deuterium
pions
perturbation theory
momentum
photons
hydrogen

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Nucleon polarizabilities from low-energy Compton scattering. / Beane, S. R.; Malheiro, M.; McGovern, J. A.; Phillips, D. R.; Van Kolck, Ubirajara.

In: Physics Letters B, Vol. 567, No. 3-4, 14.08.2003, p. 200-206.

Research output: Contribution to journalArticle

Beane, SR, Malheiro, M, McGovern, JA, Phillips, DR & Van Kolck, U 2003, 'Nucleon polarizabilities from low-energy Compton scattering', Physics Letters B, vol. 567, no. 3-4, pp. 200-206. https://doi.org/10.1016/j.physletb.2003.06.040
Beane, S. R. ; Malheiro, M. ; McGovern, J. A. ; Phillips, D. R. ; Van Kolck, Ubirajara. / Nucleon polarizabilities from low-energy Compton scattering. In: Physics Letters B. 2003 ; Vol. 567, No. 3-4. pp. 200-206.
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