The K⁻N→KΞ reaction in coupled channel chiral models up to next-to-leading order

Journal Article · Thu Jan 01 00:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4891135· OSTI ID:22306053

Magas, V. K.; Ramos, A. ^[1]; Feijoo, A. ^[2]

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1. Dept. d'Estructura i Constituents de la Matèria, Universitat de Barcelona, Martí Franquès 1, E08028 Barcelona, Spain and Institut de Ciències del Cosmos, Universitat de Barcelona, Martí Franquès 1, E08028 Bar (Spain)
2. Dept. d'Estructura i Constituents de la Matèria, Universitat de Barcelona, Martí Franquès 1, E08028 Barcelona (Spain)

We study the meson-baryon interaction in S-wave in the strangeness S=-1 sector using a chiral unitary approach based on a next-to-leading order chiral SU(3) Lagrangian. We fit our model to the large set of experimental data in different two-body channels. We pay particular attention to the K⁻N→KΞ reaction, where the effect of the next-to-leading order terms in the Lagrangian are sufficiently large to be observed, since at tree level the cross section of this reaction is zero. For these channels we improve our approach by phenomenologically taking into account effects of the high spin hyperonic resonances.

• OSTI ID: 22306053
• Journal Information: AIP Conference Proceedings, Vol. 1606, Issue 1; Conference: 2. Russian-Spanish congress on particle and nuclear physics at all scales, astroparticle physics and cosmology, St. Petersburg (Russian Federation), 1-4 Oct 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Publisher: AIP
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHIRALITY
COUPLED CHANNEL THEORY
CROSS SECTIONS
LAGRANGIAN FUNCTION
MESON-BARYON INTERACTIONS
S WAVES
SPIN
STRANGENESS
TWO-BODY PROBLEM