Properties of D and D-* mesons in the nuclear medium
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Properties of D and D-* mesons in the nuclear medium

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Properties of D and D-* mesons in the nuclear medium

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dc.contributor.author Tolós Rigueiro, Laura
dc.contributor.author García Recio, Carmen
dc.contributor.author Nieves Pamplona, Juan Miguel
dc.date.accessioned 2014-10-23T07:39:42Z
dc.date.available 2014-10-23T07:39:42Z
dc.date.issued 2009
dc.identifier.uri http://hdl.handle.net/10550/39312
dc.description.abstract We study the properties of D and D-* mesons in nuclear matter within a simultaneous self-consistent coupled-channel unitary approach that implements heavy-quark symmetry. The in-medium solution accounts for Pauli blocking effects and for the D and D-* self-energies in a self-consistent manner. We pay special attention to renormalization of the intermediate propagators in the medium beyond the usual cutoff scheme. We analyze the behavior in the nuclear medium of the rich spectrum of dynamically generated baryonic resonances in the C=1 and S=0 sector and their influence on the self-energy and, hence, the spectral function of D and D-* mesons. The D meson quasiparticle peak mixes with Sigma(c)(2823)N-1 and Sigma(c)(2868)N-1 states, whereas the Lambda(c)(2595)N-1 mode is present in the low-energy tail of the spectral function. The D-* spectral function incorporates J=3/2 resonances, and Sigma(c)(2902)N-1 and Lambda(c)(2941)N-1 fully determine the behavior of D-* meson spectral function at the quasiparticle peak. As the density increases, these resonant-hole modes tend to smear out and the spectral functions become broad. We also obtain the D and D-* scattering lengths and the optical potentials for different density regimes. The D meson potential stays attractive, whereas the D-* meson one is repulsive with increasing densities up to twice that of the normal nuclear matter. Compared to previous in-medium SU(4) models, we obtain similar values for the real part of the D meson potential but much smaller imaginary parts. This result could have important implications for the observation of D-0-nucleus bound states.
dc.language.iso eng
dc.relation.ispartof Physical Review C, 2009, vol. 80, num. 6, p. 065202
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Tolos, L. García Recio, Carmen Nieves Pamplona, Juan Miguel 2009 Properties of D and D-* mesons in the nuclear medium Physical Review C 80 6 065202
dc.subject Física
dc.title Properties of D and D-* mesons in the nuclear medium
dc.type info:eu-repo/semantics/article
dc.date.updated 2014-10-23T07:39:42Z
dc.identifier.doi http://dx.doi.org/10.1103/PhysRevC.80.065202
dc.identifier.idgrec 068557

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