标题： 电荷共轭不对称性和分子含量：物质中的$D_{s0}^\ast(2317)^\pm$ 显示英文标题

标题： Charge-conjugation asymmetry and molecular content: the $D_{s0}^\ast(2317)^\pm$ in matter

摘要： 我们分析致密核介质对$D_{s0}^\ast(2317)^\pm$和$D_{s1}(2460)^\pm$引入的修改。在真空中，我们将它们视为标量$D^{(*)}K$和$\overline{D}{}^{(*)}\overline{K}$ $S$ 波束缚态，这些束缚态是由导致不同Weinberg复合情景的有效相互作用动态生成的。 物质效应通过两介子环路函数引入，考虑到$D^{(*)}$、$\overline{D}{}^{(*)}$、$K$和$\overline{K}$在嵌入核介质中时产生的自能。 尽管真空中的粒子-反粒子 [$D^{(\ast)}_{s0,s1}(2317,2460)^+$ versus $D^{(\ast)}_{s0,s1}(2317,2460)^-$] 谱形状相同，但我们发现物质中的密度模式存在极大差异。 这种电荷共轭不对称性主要源于奇异夸克和反奇异夸克与致密介质中核子之间非常不同的相互作用。 我们表明，这些共振的介质中线形强烈依赖于它们的$D^{(*)}K$/$\overline{D}{}^{(*)}\overline{K}$分子含量，并讨论如何利用这一新特性来更好地确定/限制这些奇特态的内部结构。 显示英文摘要

摘要： We analyze the modifications that a dense nuclear medium induces in the $D_{s0}^\ast(2317)^\pm$ and $D_{s1}(2460)^\pm$. In the vacuum, we consider them as isoscalar $D^{(*)}K$ and $\overline{D}{}^{(*)}\overline{K}$ $S$-wave bound states, which are dynamically generated from effective interactions that lead to different Weinberg compositeness scenarios. Matter effects are incorporated through the two-meson loop functions, taking into account the self energies that the $D^{(*)}$, $\overline{D}{}^{(*)}$, $K$, and $\overline{K}$ develop when embedded in a nuclear medium. Although particle-antiparticle [$D^{(\ast)}_{s0,s1}(2317,2460)^+$ versus $D^{(\ast)}_{s0,s1}(2317,2460)^-$] lineshapes are the same in vacuum, we find extremely different density patterns in matter. This charge-conjugation asymmetry mainly stems from the very different kaon and antikaon interaction with the nucleons of the dense medium. We show that the in-medium lineshapes found for these resonances strongly depend on their $D^{(*)}K$/$\overline{D}{}^{(*)}\overline{K}$ molecular content, and discuss how this novel feature can be used to better determine/constrain the inner structure of these exotic states.