Title:
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(K)over-bar* mesons in dense matter
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Author:
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Tolós Rigueiro, Laura; Molina, R.; Oset Baguena, Eulogio; Ramos Gómez, Àngels
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Other authors:
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Universitat de Barcelona |
Abstract:
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We study the properties of (K) over bar* mesons in nuclear matter using a unitary approach in coupled channels within the framework of the local hidden gauge formalism and incorporating the (K) over bar pi decay channel in matter. The in-medium (K) over bar *N interaction accounts for Pauli blocking effects and incorporates the (K) over bar* self-energy in a self-consistent manner. We also obtain the (K) over bar* (off-shell) spectral function and analyze its behavior at finite density and momentum. At a normal nuclear matter density, the (K) over bar* meson feels a moderately attractive potential, while the (K) over bar* width becomes five times larger than in free space. We estimate the transparency ratio of the gamma A -> K+K*(-) A` reaction, which we propose as a feasible scenario at the present facilities to detect changes in the properties of the (K) over bar* meson in nuclear medium. |
Subject(s):
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-Teoria de camps (Física) -Properties of specific particles -General theory of fields and particles -Specific reactions and phenomenology |
Rights:
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(c) American Physical Society, 2010
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Document type:
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Article Article - Published version |
Published by:
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American Physical Society
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