TY - JOUR
T1 - Nucleon polarizabilities from low-energy Compton scattering
AU - Beane, S. R.
AU - Malheiro, M.
AU - McGovern, J. A.
AU - Phillips, D. R.
AU - Van Kolck, U.
N1 - Funding Information:
We thank T. Hemmert and M. Lucas for discussions, E. Epelbaum and V. Stoks for providing us with deuteron wave functions, and J. Brower for coding assistance. M.M., D.R.P., and U.v.K. thank the Nuclear Theory Group at the University of Washington for hospitality while part of this work was carried out, and U.v.K. thanks RIKEN, Brookhaven National Laboratory and the US DOE [DE-AC02-98CH10886] for providing the facilities essential for the completion of this work. This research is supported in part by the US DOE under grants DE-FG03-97ER41014 (S.R.B.), DE-FG02-93ER40756 (D.R.P.), by the UK EPSRC (J.M.), by Brazil's CNPq (M.M.), by DOE OJI Awards (D.R.P., U.v.K.) and by an Alfred P. Sloan Fellowship (U.v.K.).
PY - 2003/8/14
Y1 - 2003/8/14
N2 - 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.
AB - 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.
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U2 - 10.1016/j.physletb.2003.06.040
DO - 10.1016/j.physletb.2003.06.040
M3 - Article
AN - SCOPUS:0042236428
VL - 567
SP - 200
EP - 206
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 3-4
ER -