Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/20896
Share/Impact:
Title: Properties of D and D-* mesons in the nuclear medium
Authors: Nieves, Juan Miguel, García Recio, Carmen, Tolós, Laura
Issue Date: 4-Dec-2009
Publisher: American Physical Society
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.
Publisher version (URL): http://dx.doi.org/10.1103/PhysRevC.80.065202
URI: http://hdl.handle.net/10261/20896
ISSN: 0556-2813
???metadata.dc.identifier.doi???: 10.1103/PhysRevC.80.065202
Citation: Physical Review - Section C - Nuclear Physics 80 (6): 065202 (2009)
Appears in Collections:(IFIC) Artículos

Files in This Item:
File Description SizeFormat 
properties.pdf316,57 kBAdobe PDFView/Open
Show full item record
 
CSIC SFX LinksSFX Query


Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.