Properties of the Ds0*(2317)± in hot and dense nuclear matter
Abstract
We investigate the properties of the Ds0∗(2317)± in hot and dense nuclear matter using a coupled-channel molecular model built on next-to-leading-order heavy meson chiral perturbation theory. In-medium modifications to the Ds0∗(2317)+ stem from changes to the DK channel within the coupled DK-Ds η system. As nuclear density increases, the Ds0∗(2317)+ quasiparticle peak shifts toward lower energies and broadens, tracking the behavior of the D-meson spectral function. As for temperature effects, those are milder, with the thermal smearing of the Fermi surface and the melting of Σc N−1 excitations in the D-meson spectral function shifting the Ds0∗(2317)+ peak back toward its free-space mass while narrowing it. Conversely, the behavior of the Ds0∗(2317)- is governed by the D̅ K̅ channel and its medium behavior is driven by the K̅ spectral function. With increasing temperature, the Ds0∗(2317)- also approaches its free-space mass, but its width broadens before saturating at high temperatures. Incorporating explicit medium dependencies into the interaction kernel, driven by density and/or temperature variations in the pion decay constant, further shifts the Ds0∗(2317)+ mass lower and narrows its width with temperature. As for Ds0∗(2317)-, its mass also drops with temperature but its width increases. These contrasting medium behaviors offer a promising pathway to constrain the internal structure of these exotic states.
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BibTeX
@misc{kinugawa2026properties,
title = {{Properties of the $D_s0^*(2317)^\pm$ in hot and dense nuclear matter}},
author = {Tomona Kinugawa and Àngels Ramos and Laura Tolos},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2608.01272},
eprint = {2608.01272},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2608.01272},
}
RIS
TY - UNPB
TI - Properties of the D_s0^*(2317)^± in hot and dense nuclear matter
AU - Tomona Kinugawa
AU - Àngels Ramos
AU - Laura Tolos
PY - 2026
DA - 2026/10/30
PB - arXiv
DO - 10.48550/arxiv.2608.01272
UR - https://arxiv.org/abs/2608.01272
AB - We investigate the properties of the D_s0^∗(2317)^± in hot and dense nuclear matter using a coupled-channel molecular model built on next-to-leading-order heavy meson chiral perturbation theory. In-medium modifications to the D_s0^∗(2317)^+ stem from changes to the DK channel within the coupled DK-D_s η system. As nuclear density increases, the D_s0^∗(2317)^+ quasiparticle peak shifts toward lower energies and broadens, tracking the behavior of the D-meson spectral function. As for temperature effects, those are milder, with the thermal smearing of the Fermi surface and the melting of Σ_c N^−1 excitations in the D-meson spectral function shifting the D_s0^∗(2317)^+ peak back toward its free-space mass while narrowing it. Conversely, the behavior of the D_s0^∗(2317)^- is governed by the D̅ K̅ channel and its medium behavior is driven by the K̅ spectral function. With increasing temperature, the D_s0^∗(2317)^- also approaches its free-space mass, but its width broadens before saturating at high temperatures. Incorporating explicit medium dependencies into the interaction kernel, driven by density and/or temperature variations in the pion decay constant, further shifts the D_s0^∗(2317)^+ mass lower and narrows its width with temperature. As for D_s0^∗(2317)^-, its mass also drops with temperature but its width increases. These contrasting medium behaviors offer a promising pathway to constrain the internal structure of these exotic states.
ER -