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Title: | (K)over-bar* mesons in dense matter |
Authors: | Tolós, Laura; Molina, Raquel CSIC ORCID; Oset, Eulogi CSIC ORCID; Ramos, Àngels | Issue Date: | 29-Oct-2010 | Publisher: | American Physical Society | Citation: | Physical Review - Section C - Nuclear Physics 82 (4): 045210 (2010) | Abstract: | 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. | Publisher version (URL): | http://dx.doi.org/10.1103/PhysRevC.82.045210 | URI: | http://hdl.handle.net/10261/33058 | DOI: | 10.1103/PhysRevC.82.045210 | ISSN: | 0556-2813 |
Appears in Collections: | (IFIC) Artículos |
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