New experimental results on the reactions and a partial-wave analysis between 430 and 800 MeV/c

Armenteros, R.; Baillon, P.; Bricman, C.; Ferro‐Luzzi, M.; Plane, D. E.; Schmitz, N.; Burkhardt, E. G.; Filthuth, H.; Kluge, E.-E.; Oberlack, H.; Ross, R. R.; Barloutaud, R.; Granet, P.; Meyer, J.; Porte, J. P.; Prevost, J.

doi:10.1016/0550-3213(69)90346-0

Cited by 46 publications

(12 citation statements)

References 5 publications

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“…Previous single-channel analyses [2,4,6] of KN → KN, KN → π , and KN → π were simplistic energy-dependent PWAs that failed to satisfy S-matrix unitarity. A multichannel energydependent fit was performed in the c.m.…”

Section: Fitting Proceduresmentioning

confidence: 99%

“…Most prior partial-wave analyses (PWAs) [2][3][4][5][6][7] assumed a simple energy-dependent parametrization for the partial-wave amplitudes (typically, a sum of Breit-Wigner resonances plus polynomial backgrounds). Such a parametrization introduces a model-dependent bias and results in a violation of unitarity of the partial-wave S matrix.…”

Section: Introductionmentioning

confidence: 99%

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Multichannel parametrization ofK¯Nscattering amplitudes and extraction of resonance parameters

et al. 2013

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We present results of a new multichannel partial-wave analysis for KN scattering in the center-of-mass (c.m.) energy range from 1480 to 2100 MeV. Resonance parameters were extracted by fitting partial-wave amplitudes from all considered channels using a multichannel parametrization that is consistent with S-matrix unitarity. The resonance parameters are generally in good agreement with predictions of the Koniuk-Isgur quark model.

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Section: Fitting Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multichannel parametrization ofK¯Nscattering amplitudes and extraction of resonance parameters

et al. 2013

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“…The study of KN → KN , KN → πΛ, and KN → πΣ could lead to the better understanding of Λ * s and Σ * s. Most previous partial-wave analyses (PWAs) of KN → KN , KN → πΛ, and KN → πΣ [1][2][3][4][5][6], were based on the assumption that partial-wave amplitudes could be represented by a simple sum of resonant and background terms. Such an assumption violates unitarity of the partial-wave S-matrix.…”

Section: Introductionmentioning

confidence: 99%

Partial-wave analysis ofK¯Nscattering reactions

et al. 2013

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We investigate the two-body reactions KN → KN , KN → πΛ, and KN → πΣ via single-energy partial-wave analyses in the center-of-mass (c.m.) energy range 1480 to 2100 MeV. The partialwave amplitudes for these reactions thus extracted were constrained by a multichannel energydependent model satisfying unitarity of the partial-wave S-matrix. We obtain excellent predictions of differential cross sections, polarizations, polarized cross sections, and cross sections for these reactions from a global energy-dependent solution.

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“…phase shifts and the corresponding data. At present, the existing empirical phase shifts of the KN scattering [37][38][39][40][41] are all above the kaon laboratory momentum of 200 MeV (corresponding to the CM energy of around 1460 MeV); thus, the resulting S-and P-wave phase shifts are shown in Fig. 4 without the empirical phase shifts.…”

Section: Resultsmentioning

confidence: 99%

“…The partial wave amplitudes f (37) where P l (z) are conventional Legendre polynomials. For the energy range considered in this paper, the phase shifts δ (I) l±s (q) are evaluated from (for discussions about the phase shifts, see Refs.…”

Section: Calculating Phase Shifts and Scattering Lengthsmentioning

confidence: 99%

Kaon-nucleon scattering to one-loop order in heavy baryon chiral perturbation theory

Huang

2015

Phys. Rev. D

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We calculate the T-matrices of kaon-nucleon (KN ) and antikaon-nucleon (KN ) scattering to oneloop order in SU(3) heavy baryon chiral perturbation theory (HBχPT). The low-energy constants (LECs) and their combinations are then determined by fitting the phase shifts of KN scattering and the corresponding data. This leads to a good description of the phase shifts below 200 MeV kaon laboratory momentum. We obtain the LEC uncertainties through statistical regression analysis. We also determine the LECs through the use of scattering lengths in order to check the consistency of the HBχPT framework for different observables and obtain a consistent result. By using these LECs, we predict the KN elastic scattering phase shifts and obtain reasonable results. The scattering lengths are also predicted, which turn out to be in good agreement with the empirical values except for the isospin-0 KN scattering length that is strongly affected by the Λ(1405) resonance. As most calculations in the chiral perturbation theory, the convergence issue is discussed in detail. Our calculations provide a possibility to investigate the baryon-baryon interaction in HBχPT.

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New experimental results on the reactions and a partial-wave analysis between 430 and 800 MeV/c

Cited by 46 publications

References 5 publications

Multichannel parametrization ofK¯Nscattering amplitudes and extraction of resonance parameters

Multichannel parametrization ofK¯Nscattering amplitudes and extraction of resonance parameters

Partial-wave analysis ofK¯Nscattering reactions

Kaon-nucleon scattering to one-loop order in heavy baryon chiral perturbation theory

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