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Nuclear forces from chiral Lagrangians using the method of unitary transformation II: The two-nucleon system

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Epelbaum, E., Glöckle, W., Meißner, Ulf-G.·2000·Nuclear Physics A

Abstract

Abstract We employ the chiral nucleon–nucleon potential derived in [Nucl. Phys. A 637 (1998) 107] to study bound and scattering states in the two-nucleon system. At next-to-leading order, this potential is the sum of renormalized one-pion and two-pion exchange and contact interactions. At next-to-next-to-leading order, we have additional chiral two-pion exchange with low-energy constants determined from pion–nucleon scattering. Alternatively, we consider the Δ(1232) as an explicit degree of freedom in the effective field theory. The nine parameters related to the contact interactions can be determined by a fit to the np S- and P-waves and the mixing parameter ϵ1 for laboratory energies below 100 MeV. The predicted phase shifts and mixing parameters for higher energies and higher angular momenta are mostly well described for energies below 300 MeV. The S-waves are described as precisely as in modern phenomenological potentials. We find a good description of the deuteron properties.

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Metadata

Authors
Epelbaum, E., Glöckle, W., & Meißner, U.-G.
Venue
Nuclear Physics A
Publisher
Elsevier BV
Published
2000-05
Volume
671
Issue
1-4
Pages
295-331
ISSN
0375-9474 (ISSN-L)
OpenAlex
W2019006130
Cited by
393
References
22
FWCI
17.98
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Nuclear forces from chiral Lagrangians using the method of unitary transformation II: The two-nucleon system. https://app.cochat.ai/papers/10.1016/s0375-9474(99)00821-0
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Epelbaum, E., Glöckle, W., & Meißner, U.-G. (2000). Nuclear forces from chiral Lagrangians using the method of unitary transformation II: The two-nucleon system. Nuclear Physics A. https://doi.org/10.1016/s0375-9474(99)00821-0

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