The in-medium (K)over-barN interaction within a chiral unitary approach
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The in-medium (K)over-barN interaction within a chiral unitary approach

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The in-medium (K)over-barN interaction within a chiral unitary approach

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Tolós Rigueiro, Laura; Ramos Gómez, Àngels; Oset Báguena, Eulogio Perfil
Aquest document és un/a article, creat/da en: 2007
The s- and p-wave contributions to the K¯N interaction in dense nuclear matter are obtained using a chiral unitary approach. We perform a self-consistent calculation of the K¯ self-energy including Pauli blocking effects, meson self-energies modified by short-range correlations and baryon binding potentials. We find that the on-shell factorization cannot be applied to evaluate the in-medium corrections to p-wave amplitudes. Furthermore, the Λ and Σ develop a mass shift of -30 MeV at saturation density while the Σ∗ width increases to 80 MeV. We conclude that no deep and narrow K¯ bound states could be observed.

    Tolós Rigueiro, Laura Ramos Gómez, Àngels Oset Báguena, Eulogio 2007 The in-medium (K)over-barN interaction within a chiral unitary approach Progress of Theoretical Physics Supplement 168 635 638
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