Nucleon-nucleon scattering from effective field theory
Abstract
We perform a non-perturbative calculation of the 1S 0NN scattering amplitude, using an effective field theory (EFT) expansion. The expansion we advocate is a modification of what has been used previously; it is not a chiral expansion in powers of mπ. We use dimensional regularization throughout, and the overlineMS renormalization scheme; our final result depends only on physical observables. We show that the EFT expansion of the quantity |p| cot θ( p) converges at momenta much greater than the scale A that characterizes the derivative expansion of the EFT Lagrangian. Our conclusions are optimistic about the applicability of an EFT approach to the quantitative study of nuclear matter.
- Publication:
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Nuclear Physics B
- Pub Date:
- February 1996
- DOI:
- 10.1016/0550-3213(96)00357-4
- arXiv:
- arXiv:nucl-th/9605002
- Bibcode:
- 1996NuPhB.478..629K
- Keywords:
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- Nuclear Theory;
- High Energy Physics - Phenomenology
- E-Print:
- Revised discussion of power counting in the EFT expansion. Tex file uses harvmac, epsf macros, 35 pages with 9 postscript figures