论文标题
中微子磁矩和电荷半径约束的影响以及核子形式的介质修饰在密集物质中的中微子平均自由路径上
Effects of neutrino magnetic moment and charge radius constraints and medium modifications of the nucleon form factors on the neutrino mean free path in dense matter
论文作者
论文摘要
估计中微子电荷半径和磁矩约束的影响，从天体物理观测和反应器实验以及弱和电磁核的中微子核子形式的中微子核电核与中微子电动核的相互作用与密集物质相互作用上的中微子内修饰的影响。我们使用相对论的平均场模型用于中等内核子质量和夸克 - 梅森耦合模型，用于核子形态。我们分析中微子散射横截面和冷核物质中的平均自由路径。我们发现，当中微子形式因子和核子弱的中微子内中微子的形式修饰和电磁型因子的中微子修饰时，横截面相对于没有中微子形式的没有中微子形式的增加会导致中微子平均自由路径的减少。中微子平均自由路径的淬灭的值约为12-58 \％，对于$μ_ν= 3 \ times 10^{ - 12}μ_b$和$r_ν= 3.5 \ times 10^{ - 5}〜}〜}〜}〜\ textrm {mev}^{mev}^{ - 1} $ n $ n $ n $ n $ n $和$ n $ n $ n $ n $ n $ n $和$中微子平均自由路径的减少有望减速中子恒星的冷却。讨论了中微子形式因子对中微子平均自由路径的每个贡献。
Effects of neutrino charge radius and magnetic moment constraints obtained from the astrophysical observations and reactor experiments, as well as in-medium modifications of the weak and electromagnetic nucleon form factors of the matter on the neutrino electroweak interaction with dense matter, are estimated. We use a relativistic mean-field model for the in-medium effective nucleon mass and quark-meson coupling model for nucleon form factors. We analyze the neutrino scattering cross section and mean free path in cold nuclear matter. We find that the increase of the cross section relative to that without neutrino form factors results in the decrease of the neutrino mean free path when neutrino form factors and the in-medium modifications of the nucleon weak and electromagnetic form factors are simultaneously considered. The quenching of the neutrino mean free path is evaluated to be about 12-58\% for the values of $μ_ν= 3 \times 10^{-12} μ_B$ and $R_ν= 3.5 \times 10^{-5}~\textrm{MeV}^{-1}$ compared with that obtained for the $μ_ν=0$ and $R_ν=0$. The decrease of the neutrino mean free path is expected to decelerate the cooling of neutron stars. Each contribution of the neutrino form factors to the neutrino mean free path is discussed.
