Baryon-baryon interactions from Effective Field Theory

Haidenbauer, J.

doi:10.1051/epjconf/20100301009

Cited by 5 publications

(6 citation statements)

References 12 publications

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“…without two-meson-exchange contributions) presented in Ref. [70] a bound hypertriton was achieved with Λp 1 S 0 scattering lengths around −2.6 fm, i.e. close to the values of the two meson-exchange potentials, cf.…”

Section: Resultssupporting

confidence: 71%

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Hyperon–nucleon interaction at next-to-leading order in chiral effective field theory

et al. 2013

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Results for the ΛN and ΣN interactions obtained at next-to-leading order in chiral effective field theory are reported. At the order considered there are contributions from one-and two-pseudoscalar-meson exchange diagrams and from four-baryon contact terms without and with two derivatives. SU(3) flavor symmetry is imposed for constructing the hyperon-nucleon interaction while the explicit SU(3) symmetry breaking by the physical masses of the pseudoscalar mesons (π, K, η) is taken into account. An excellent description of the hyperon-nucleon system can be achieved at next-to-leading order. It is on the same level of quality as the one obtained by the most advanced phenomenological hyperon-nucleon interaction models.

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Section: Resultssupporting

confidence: 71%

“…Furthermore, in Ref. [70] we had presented results based on an incomplete NLO calculation, i.e. where only the NLO contact terms were taken into account but no two-meson-exchange contributions.…”

Section: Fitting Proceduresmentioning

confidence: 99%

Hyperon–nucleon interaction at next-to-leading order in chiral effective field theory

et al. 2013

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“…Those variations led to changes of the predicted resonance energy in the order of 1 MeV only. Even an exploratory calculation that utilizes the low-energy coefficients determined in a preliminary NLO study of the Y N system [27] yielded practically the same result.…”

Section: Application To Lattice Qcd Resultsmentioning

confidence: 77%

“…Table I, [27]. However, if we assume that C 1 = 0 and vary its value then in both cases a near-threshold bound state can be produced for values of natural size.…”

Section: Quark Mass Dependence Of the Binding Energy And Su(3) Bmentioning

confidence: 99%

To bind or not to bind: The H-dibaryon in light of chiral effective field theory

Haidenbauer

Meißner

2011

Physics Letters B

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We analyse the quark mass dependence of the binding energy of the H-dibaryon in the framework of chiral effective field theory. We show that the SU(3) breaking effects induced by the differences of the pertinent two-baryon thresholds (ΛΛ, ΞN , ΣΣ) have a very pronounced impact that need to be incorporated properly in future lattice QCD simulations. We also point out that if the H-dibaryon is a two-baryon bound state, its dominant component is ΞN rather than ΛΛ, which is a consequence of the approximate SU(3) flavor symmetry of the two-baryon interactions.

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“…The large and positive scattering length in the 3 S 1 − 3 D 1 partial wave, produced by that potential model, is usually a sign for the presence of a bound state, though according to the authors this is not the case for this specific interaction. Further results, and specifically ΞΛ, ΞΣ, and ΞΞ phase shifts, can be found in [17].…”

Section: Resultsmentioning

confidence: 86%