Studying Kaon-pion S-wave scattering in K-matrix formalism

Abstract

We generalize our previous work on ππscattering to Kπscattering, and re-analyze the experiment data of Kπscattering below 1.6 GeV. Without any free parameter, we explain KπI=3/2 S-wave phase shift very well by using t-channel rho and u-channel K^* meson exchange. With the t-channel and u-channel meson exchange fixed as the background term, we fit the KπI=1/2 S-wave data of the LASS experiment quite well by introducing one or two s-channel resonances. It is found that there is only one s-channel resonance between Kπthreshold and 1.6 GeV, i.e., K_0^*(1430) with a mass around 1438~1486 MeV and a width about 346 MeV, while the t-channel rho exchange gives a pole at (450-480i) MeV for the amplitude.

REVTeX4 file, 11 pages and 3 figures

References in corpus (17)

• Meson-Meson interaction in a non-perturbative chiral approach
• N/D Description of Two Meson Amplitudes and Chiral Symmetry
• Resurrection of the Sigma Meson
• A low-lying scalar meson nonet in a unitarized meson model
• UNDERSTANDING THE SCALAR MESON $q\bar{q}$ NONET
• On the structure of the scalar mesons $f_0(975)$ and $a_0(980)$
• Meson-meson scattering within one loop Chiral Perturbation Theory and its unitarization
• Putative Light Scalar Nonet
• S-wave Kpi scattering in chiral perturbation theory with resonances
• Mechanism for a next-to-lowest lying scalar meson nonet
• Evidence for a scalar kappa(900) resonance in pi-K scattering
• Analysis of Kπ-scattering phase shift and existence of κ(900)-particle
• K-matrix analysis of the K-pi S-wave in the mass region 900-2100 Mev and nonet classification of scalar qqbar-states
• There is no $\kappa (900)$
• Isospin violation in pion-kaon scattering
• The $\pi \pi$ Final State Interaction in $K\to \pi \pi$, $pp\to pp\pi \pi$ and Related Processes
• A New Decomposition of pion-pion S-wave Interaction

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