Elastic electron-deuteron scattering in chiral effective field theory

Details Elastic electron-deuteron scattering in chiral effective field theory Elastic electron-deuteron scattering in chiral effective field theory

2001-03-07

arxiv.org/abs/nucl-th/0103020v3

Phys.Lett. B513 (2001) 37-45

Physics

Nuclear Physics

Nuclear Theory

13 pp, elsart.cls, 4 figs, extended version, includes NNLO corrections and more detailed discussions

Scientific paper

10.1016/S0370-2693(01)00727-4

We calculate elastic electron-deuteron scattering in a chiral effective field theory approach for few-nucleon systems based on a modified Weinberg power counting. We construct the current operators and the deuteron wave function at next-to-leading (NLO) and next-to-next-to-leading (NNLO) order simultaneously within a projection formalism. The leading order comprises the impulse approximation of photons coupling to point-like nucleons with an anomalous magnetic moment. At NLO, we include renormalizations of the single nucleon operators. To this order, no unknown parameters enter. At NNLO, one four-nucleon-photon operator appears. Its strength can be determined from the deuteron magnetic moment. We obtain not only a satisfactory description of the deuteron structure functions and form factors measured in electron-deuteron scattering but also find a good convergence for these observables.

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