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arXiv · 1501.01191

$^1S_0$ nucleon-nucleon scattering in the modified Weinberg approach

E. Epelbaum·A. M. Gasparyan·J. Gegelia·H. Krebs
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Abstract

Nucleon-nucleon scattering in the $^1S_0$ partial wave is considered in chiral effective field theory within the renormalizable formulation of Ref. [1] beyond the leading-order approximation. By applying subtractive renormalization, the subleading contact interaction in this channel is taken into account non-perturbatively. For a proper choice of renormalization conditions, the predicted energy dependence of the phase shift and the coefficients in the effective range expansion are found to be in a good agreement with the results of the Nijmegen partial wave analysis.

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E. Epelbaum, A. M. Gasparyan, J. Gegelia, H. Krebs. 2015-01-06. $^1S_0$ nucleon-nucleon scattering in the modified Weinberg approach. https://arxiv.org/abs/1501.01191

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