论文标题
热培养基对$ D $介子及其手性伴侣的影响
Impact of a thermal medium on $D$ mesons and their chiral partners
论文作者
论文摘要
我们使用基于手性和夸张的自旋风味对称性的有效野外理论在有限的场上研究$ d $和$ d_s $介子在有限的温度下。与轻度自由度的互动是通过伯特盐盐方法单位化的，并且$ d $和$ d_s $自我呼气是自以为是的。我们动态生成$ d^*_ 0（2300）$和$ d_s（2317）$状态，并分别研究他们作为$ d $和$ d_s $基础状态的手性伙伴的可能识别。我们将其质量的演变和衰减宽度作为温度的功能，并分析过渡温度以下的重味扇区中的手性对称性恢复。特别是，我们分析了$ d $ -Meson的非常特殊的案例，手性合作伙伴与$ d^*_ 0（2300）$的双极结构相关联。
We study $D$ and $D_s$ mesons at finite temperature using an effective field theory based on chiral and heavy-quark spin-flavor symmetries within the imaginary-time formalism. Interactions with the light degrees of freedom are unitarized via a Bethe-Salpeter approach, and the $D$ and $D_s$ self-energies are calculated self-consistently. We generate dynamically the $D^*_0(2300)$ and $D_s(2317)$ states, and study their possible identification as the chiral partners of the $D$ and $D_s$ ground states, respectively. We show the evolution of their masses and decay widths as functions of temperature, and provide an analysis of the chiral-symmetry restoration in the heavy-flavor sector below the transition temperature. In particular, we analyse the very special case of the $D$-meson, for which the chiral partner is associated to the double-pole structure of the $D^*_0(2300)$.
