The YN and interactions and low-energy K−d elastic scattering

Bahaoui, Abdelhadi; Fayard, C.; Lamot, G. H.; Mizutani, T.

doi:10.1016/0375-9474(90)90494-7

Cited by 15 publications

(19 citation statements)

References 7 publications

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“…The Faddeev equations rely already on partial summations over the different channels which lead to theKN t matrix on each individual nucleon, but even then the explicit channels appear in the multiple collisions with two different nucleons and the Faddeev equations can be generalized to these channels [15][16][17]. In the present work we follow these lines but we observe that the relevant channels in the Faddeev equations are the K − N andK 0 N channels.…”

Section: Introductionmentioning

confidence: 61%

Chiral unitary approach to the –deuteron scattering length

2001

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Starting from a recent model where theKN amplitudes are evaluated from the chiral Lagrangians using a coupled channel unitary method, we evaluate here the scattering length for K − deuteron scattering. We find that the double scattering contribution is very large compared to the impulse approximation and that the charge exchange contribution of this rescattering is as large as the sequential K − scattering on the two nucleons. Higher order rescattering corrections are evaluated using coupled channels with K − andK 0 within the integral form of the fixed centre approximation to the Faddeev equations. The higher order corrections involving intermediate pions and hyperons are found negligible.

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Section: Introductionmentioning

confidence: 61%

Chiral unitary approach to the –deuteron scattering length

2001

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“…This situation is very different from the coherent process of Kd elastic scattering at threshold appearing in the evaluation of the Kd scattering length. In this case the slow kaon sticks around the nucleons of the deuteron and multiple scattering with the two nucleons is needed in the evaluation of the scattering length [17,18,19,20]. The situation bears much resemblance to the case of elastic low energy pion nucleus scattering, which requires the full solution of the Klein-Gordon equation accounting for multiple scattering with the nucleons [21], and the quasielastic breakup processes which proceeds incoherently with the contribution of the first process kinemallically allowed [22].…”

Section: Scattering Amplitudementioning

confidence: 99%

Kaonic production of $ \Lambda$ (1405) off deuteron target in chiral dynamics

2009

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The K − induced production of Λ(1405) is investigated in K − d → πΣn reactions based on coupled-channels chiral dynamics, in order to discuss the resonance position of the Λ(1405) in theKN channel. We find that the K − d → Λ(1405)n process favors the production of Λ(1405) initiated by theKN channel. The present approach indicates that the Λ(1405) resonance position is 1420 MeV rather than 1405 MeV in the πΣ invariant mass spectra of K − d → πΣn reactions. This is consistent with an observed spectrum of the K − d → π + Σ − n with 686-844 MeV/c incident K − by bubble chamber experiments done in the 70's. Our model also reproduces the measured Λ(1405) production cross section.

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“…Eqs. (7,11) were used to compare with values for a K − d reported in Faddeev calculations done in the isospin basis, with the further approximation of replacing r −n by the TPE matrix elements < r −n > for n = 1, 2 from Table 1 in Ref. 23.…”

Section: Including Charge Exchange In the Brueckner Formulamentioning

confidence: 99%

ON THE SCATTERING LENGTH OF THE K^-d SYSTEM

Gal

2007

Int. J. Mod. Phys. A

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Multiple-scattering approximations to Faddeev calculations of the K − d scattering length are reviewed and compared with publishedKN N − πY N fully reactive Faddeev calculations. A new multiple-scattering approximation which goes beyond the 'fixed-center' assumption for the nucleons is proposed, aiming at accuracies of 5 − 10%. A precise value of the K − d scattering length from the measurement of the K − d 1s atomic level shift and width, planned by the DEAR/SIDDHARTA collaboration, plus a precise value for the K − p scattering length by improving the K − p atom measurements, are essential for extracting the K − n scattering length, for resolving persistent puzzles in low-energyKN phenomenology and for extrapolating intoK-nuclear systems.

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The YN and interactions and low-energy K−d elastic scattering

Cited by 15 publications

References 7 publications

Chiral unitary approach to the –deuteron scattering length

Chiral unitary approach to the –deuteron scattering length

Kaonic production of $ \Lambda$ (1405) off deuteron target in chiral dynamics

ON THE SCATTERING LENGTH OF THE K^-d SYSTEM

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The YN and interactions and low-energy K−d elastic scattering

Cited by 15 publications

References 7 publications

Chiral unitary approach to the –deuteron scattering length

Chiral unitary approach to the –deuteron scattering length

Kaonic production of $ \Lambda$ (1405) off deuteron target in chiral dynamics

ON THE SCATTERING LENGTH OF THE K-d SYSTEM

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About

ON THE SCATTERING LENGTH OF THE K^-d SYSTEM