Quark mass dependence of the nuclear forces |
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| Authors: | E Epelbaum Ulf-G Meißner W Glöckle |
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| Institution: | (1) Institut für Theoretische Physik II, Ruhr-Universität Bochum, D-44870 Bochum, Germany;(2) Institut für Theoretische Physik, Karl-Franzens-Universität Graz, A-8010 Graz, Austria;(3) Institut für Kernphysik (Theorie), Forschungszentrum Jülich, D-52425 Jülich, Germany |
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| Abstract: | We investigate the behavior of the nuclear force as a function of the light-quark masses m
q
in the framework of chiral effective field theory at next-to-leading order. The unknown m
q
-dependent short-range contribution is estimated by means of dimensional analysis. We calculate various observables for different values of m
q
. We found no new bound states and a larger deuteron binding energy,
MeV, in the chiral limit.Received: 30 September 2002, Published online: 22 October 2003PACS:
11.30.Rd Chiral symmetries - 13.75.Cs Nucleon-nucleon interactions (including antinucleons, deuterons, etc.) - 21.30.Cb Nuclear forces in vacuum - 21.30.Fe Forces in hadronic systems and effective interactions |
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