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The $\kappa$ resonance in s wave $\pi K$ scatterings

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arxiv hep-ph/0310293 v3 pith:2OE57ELN submitted 2003-10-26 hep-ph

H. Q. Zheng , Z. Y. Zhou , G. Y. Qin , Z. G. Xiao , J. J. Wang , N. Wu This is my paper · ORCID
classification hep-ph
keywords kappachiralresonancescatteringscatteringsaccountappliedapproach
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abstract

A new unitarization approach incorporated with chiral symmetry is established and applied to study the $\pi K$ elastic scatterings. We demonstrate that the $\kappa$ resonance exists, if the scattering length parameter in the I=1/2, J=0 channel does not deviate much from its value predicted by chiral perturbation theory. The mass and width of the $\kappa$ resonance is found to be $M_\kappa=594\pm 79MeV$, $\Gamma_\kappa=724\pm 332MeV$, obtained by fitting the LASS data up to 1430MeV. Better determination to the pole parameters is possible if the chiral predictions on scattering lengths are taken into account.

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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Rigorous Roy-Steiner equation analysis of $\pi K$ scattering at unphysical quark masses

    hep-ph 2024-12 conditional novelty 7.0 of 10

    At a pion mass of 391 MeV, dispersive Roy-Steiner analysis finds K0*(700) is a broad resonance, not a virtual state, when crossed-channel dynamics are included.

  2. Revisiting Roy-Steiner-equation analysis of pion-kaon scattering from lattice QCD data

    hep-ph 2025-06 conditional novelty 6.0 of 10

    A Roy-Steiner dispersive analysis of lattice QCD pion-kaon data at m_pi = 391 MeV finds the κ resonance at (966-i198) MeV, a broad resonance rather than the virtual-state pole reported in K-matrix analyses.

  3. Doubly charmed baryon-light meson scattering in chiral effective theory with lattice constraints

    hep-ph 2026-06 unverdicted novelty 5.0 of 10

    Chiral EFT with lattice-fitted LECs and unitarization predicts resonance, virtual, and bound states plus scattering parameters for doubly charmed baryon-meson systems at physical quark masses.

  4. Lattice QCD study of the $K^*(892)$ resonance at the physical point

    hep-lat 2026-03 unverdicted novelty 5.0 of 10

    Lattice QCD yields the K*(892) resonance pole at physical pion mass and continuum limit as 883(22) - i20(13) MeV, in agreement with experiment.

  5. CP violation studies at Super Tau-Charm Facility

    hep-ex 2025-02 conditional novelty 4.0 of 10

    A future Super Tau-Charm Facility is projected to test CP violation in hyperon, tau, and charm decays at 1e-4 to 1e-3 sensitivities and improve the kaon CPT mass-difference limit tenfold.

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