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Polarized pK- scattering in Unitary Baryon Chiral Perturbation Theory

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Abstract

We study pK- scattering in the energy range from threshold through the \( \Lambda\)(1520) peak in UBChPT, taking into account O(q) vertices from meson-baryon contact interactions and s - and u -channel ground-state baryon exchange, s - and u -channel decuplet- and nonet-baryon exchange and t -channel vector-meson exchange, as well as O(q 2) flavor-breaking vertices. Detailed fits to data are presented, including a substantial body of differential cross-section data with meson momentum q lab > 300 MeV not considered in previous treatments.

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  1. Departamento de Física Aplicada, CINVESTAV-IPN, Carretera Antigua a Progreso Km. 6, Apdo. Postal 73 “Cordemex”, 97310, Mérida, Yucatán, Mexico

    Antonio O. Bouzas

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  1. Antonio O. Bouzas
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Correspondence to Antonio O. Bouzas.

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Communicated by J. Bijnens

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Bouzas, A.O. Polarized pK- scattering in Unitary Baryon Chiral Perturbation Theory. Eur. Phys. J. A 43, 351–368 (2010). https://doi.org/10.1140/epja/i2010-10923-1

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