Inelastic Σ−p-interactions at low momenta

Engelmann, R.; Filthuth, H.; Hepp, V.; Kluge, E.-E.

doi:10.1016/0031-9163(66)91310-2

Cited by 158 publications

(88 citation statements)

References 6 publications

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“…As discussed in subsection II C, the Fredholm determinant is real since we have dropped the imaginary part of the propagator G Λ (E; p Λ ) in Eq. (23). Near the bound state the Fredholm determinant has the form D(E) = C(E − E 0 ) where C is a constant and E 0 is the energy of the bound state.…”

Section: Calculation Of the Widthsmentioning

confidence: 99%

Strange tribaryons

et al. 2006

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We use two-body potentials derived from a constituent quark cluster model to analyze the bound-state problem of the ΣN N system. The observables of the two-body subsystems, N N and ΣN , are well reproduced. We do not find ΣN N bound states, but there are two attractive channels with a resonance close above the three-body threshold. These channels are the (I, J) = (1, 1/2) and (0, 1/2), their quantum numbers, widths and energy ordering consistent with the recently measured strange tribaryons from the 4 He(K

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Section: Calculation Of the Widthsmentioning

confidence: 99%

Strange tribaryons

et al. 2006

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“…The shaded band is the chiral EFT result for Λ = 550, ..., 700 MeV [26], the solid curve is the Jülich '04 model [9], and the dashed curve is the Nijmegen NSC97f potential [7]. [40], in (c),(d) from [41], in (e) from [55] and in (f) from [54]. Same description of curves as in Fig.…”

Section: Resultsmentioning

confidence: 99%

The Hyperon-Nucleon Interaction: Conventional Versus Effective Field Theory Approach

Haidenbauer¹,

Meißner

Nogga³

et al.

Lecture Notes in Physics

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Hyperon-nucleon interactions are presented that are derived either in the conventional meson-exchange picture or within leading order chiral effective field theory. The chiral potential consists of one-pseudoscalar-meson exchanges and non-derivative four-baryon contact terms. With regard to meson-exchange hyperon-nucleon models we focus on the new potential of the Jülich group, whose most salient feature is that the contributions in the scalar-isoscalar (σ) and vector-isovector (ρ) exchange channels are constrained by a microscopic model of correlated ππ and KK exchange.

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“…[5,29]. It contains 36 data, of which 35 are total cross sections of ΛN and ΣN reactions [78][79][80][81] with the laboratory momentum smaller than approximately 300 MeV/c, P lab < 300 MeV/c.…”

Section: Fitting Proceduresmentioning

confidence: 99%

StrangenessS=−1hyperon-nucleon scattering in covariant chiral effective field theory

Ren

Geng

et al. 2016

Phys. Rev. D

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Motivated by the successes of covariant baryon chiral perturbation theory in one-baryon systems and in heavy-light systems, we study relevance of relativistic effects in hyperon-nucleon interactions with strangeness S = −1. In this exploratory work, we follow the covariant framework developed by Epelbaum and Gegelia to calculate the Y N scattering amplitude at leading order. By fitting the five low-energy constants to the experimental data, we find that the cutoff dependence is mitigated, compared with the heavy-baryon approach. Nevertheless, the description of the experimental data remains quantitatively similar at leading order.

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Inelastic Σ−p-interactions at low momenta

Cited by 158 publications

References 6 publications

Strange tribaryons

Strange tribaryons

The Hyperon-Nucleon Interaction: Conventional Versus Effective Field Theory Approach

StrangenessS=−1hyperon-nucleon scattering in covariant chiral effective field theory

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