Mass degeneracy of heavy-light mesons with chiral partner structure in the half-Skyrmion phase
Mass degeneracy of heavy-light mesons with chiral partner structure in the half-Skyrmion phase
复制标题
半斯格明子相中具有手性伙伴结构的重轻介子的质量简并
DOI：
10.1103/physrevd.91.036001
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发表时间：
2014-12
期刊：
影响因子：
--
通讯作者：
Harada Masayasu
中科院分区：
文献类型：
--
作者：
Suenaga Daiki;He Bing-Ran;Ma Yong-Liang;Harada Masayasu
我们研究了核物质中具有手性配对结构的重轻介子的质量分裂。在我们的计算中，我们采用了具有手征配对结构的重强子手征微扰理论，将标准Skyrme模型中的Skyrmion置于面心立方晶体上，并将Skyrmion物质视为核物质，从而构造了核物质。我们发现，尽管具有手征配对结构的重轻介子的质量在无物质空间和Skyrmion相中分裂，但在手征对称性整体恢复的半Skyrmion相中它们是简并的。这表明，具有手性配对结构的重轻介子质量分裂的大小可以用来探测核物质的相结构。
We explore the mass splitting of heavy-light mesons with chiral partner structure in nuclear matter. In our calculation, we employed the heavy hadron chiral perturbation theory with chiral partner structure, and the nuclear matter is constructed by putting Skyrmions from the standard Skyrme model onto the face-centered cubic crystal and regarding the Skyrmion matter as nuclear matter. We find that, although the masses of heavy-light mesons with chiral partner structure are split in matter-free space and the Skyrmion phase, they are degenerated in the half-Skyrmion phase in which the chiral symmetry is restored globally. This observation suggests that the magnitude of the mass splitting of heavy-light mesons with chiral partner structure can be used as a probe of the phase structure of nuclear matter.