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1S0 nucleon-nucleon scattering in the modified Weinberg approach

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Abstract

Nucleon-nucleon scattering in the 1 S 0 partial wave is considered in chiral effective field theory within the renormalizable formulation of a previous work (Phys. Lett. B 716, 338 (2012)) 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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Authors and Affiliations

  1. Institut für Theoretische Physik II, Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, 44780, Bochum, Germany

    E. Epelbaum, A. M. Gasparyan, J. Gegelia & H. Krebs

  2. SSC RF ITEP, Bolshaya Cheremushkinskaya 25, 117218, Moscow, Russia

    A. M. Gasparyan

  3. Tbilisi State University, 0186, Tbilisi, Georgia

    J. Gegelia

Authors
  1. E. Epelbaum
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  2. A. M. Gasparyan
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  3. J. Gegelia
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  4. H. Krebs
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Correspondence to J. Gegelia.

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Communicated by S. Hands

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Epelbaum, E., Gasparyan, A.M., Gegelia, J. et al. 1S0 nucleon-nucleon scattering in the modified Weinberg approach. Eur. Phys. J. A 51, 71 (2015). https://doi.org/10.1140/epja/i2015-15071-6

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  • DOI: https://doi.org/10.1140/epja/i2015-15071-6

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