论文标题

中微子的中微子在中子恒星中具有不确定性的核,强子和粒子物理的传播

Neutrino propagation in the neutron star with uncertainties from nuclear, hadron, and particle physics

论文作者

Hutauruk, Parada T. P., Gil, Hana, Nam, Seung-il, Hyun, Chang Ho

论文摘要

在目前的工作中,我们使用各种能量密度功能(EDF)模型(例如儿童(Korea-ibs-daegu-skku)和Sly4)和Quark-Meson coupling(QMC)模型一起研究了核培养基中的中微子核子散射(EDF)模型。考虑到密度依赖性的核子形态因子(DDFF)和中微子结构特性,例如中微子磁矩(NMM)以及其电荷半径(NCR),差异横截面(DC)和中微子平均自由路径(NMFP)是数值计算的。事实证明,DDFF会减少散射横截面,而NCR大大增加了它。 NMM的效果几乎可以忽略不计。我们还观察到中子有效质量的价值在中子星冷却过程中很重要,这表明对于自由空间中的中微子大于质量大的质量,中微子可以在中子$ρ\ gtrsim $ρ\ gtrsim 1.5ρ_0$的物质相互作用,而半径为13 km。

In the present work, we investigate the neutral-current neutrino-nucleon scattering in the nuclear medium using various energy-density functional (EDF) models such as the KIDS (Korea-IBS-Daegu-SKKU) and SLy4, together with the quark-meson coupling (QMC) model for the nucleon form factors at finite density. The differential cross section (DCS) and neutrino mean free path (NMFP) are computed numerically, considering the density-dependent nucleon form factors (DDFF) and neutrino structural properties such as the neutrino magnetic moment (NMM) and its electric charge radius (NCR). It turns out that the DDFF decreases the scattering cross-section, while the NCR increases it considerably. The effect of the NMM turns out to be almost negligible. We also observe that the value of the neutron effective mass is of importance in the neutron-star cooling process, indicating that for the neutron effective mass larger than the mass in free space, the neutrino can interact with matter at densities $ρ\gtrsim 1.5 ρ_0$ in the neutron star with radius 13 km.

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