论文标题
使用原始黑洞营救高尺度的瘦化发生
Rescuing High-Scale Leptogenesis using Primordial Black Holes
论文作者
论文摘要
我们探讨了光原始黑洞（PBH）和高尺度的男生成之间的相互作用，并特别强调了瘦素发生。我们首先回顾了一种通用的男性生成方案，其中一个重粒子，$ x $，质量为$ m_x $，仅由PBH蒸发衰变产生，以产生Baryon不对称。我们表明，可行的参数空间在上面的界限为$ m_x \ lyssim 10^{17} $ gev，并随着$ m_x $的减少而增加。 We demonstrate that regions of the leptogenesis parameter space where the lightest right-handed neutrino (RHN) mass $M_{N_{1}}\gtrsim 10^{15}\,{\rm GeV}$ and neutrino mass scale $m_ν\gtrsim 0.1$ eV, excluded in standard cosmology due to $ΔL=2$ washout processes, becomes viable with轻质PBH的帮助。 PBH辅助诱导发生的这种情况之所以发生，是因为当热等离子体的温度相对于RHN质量时，PBHS在宇宙后期通过霍金蒸发辐射RHN。随后，这些RHN可以在抑制冲洗过程的同时腐烂并产生Lepton不对称性。
We explore the interplay between light primordial black holes (PBH) and high-scale baryogenesis, with a particular emphasis on leptogenesis. We first review a generic baryogenesis scenario where a heavy particle, $X$, with mass, $M_X$, produced solely from PBH evaporation decays to generate a baryon asymmetry. We show that the viable parameter space is bounded from above by $M_X \lesssim 10^{17}$ GeV and increases with decreasing $M_X$. We demonstrate that regions of the leptogenesis parameter space where the lightest right-handed neutrino (RHN) mass $M_{N_{1}}\gtrsim 10^{15}\,{\rm GeV}$ and neutrino mass scale $m_ν\gtrsim 0.1$ eV, excluded in standard cosmology due to $ΔL=2$ washout processes, becomes viable with the assistance of light PBHs. This scenario of PBH-assisted leptogenesis occurs because the PBHs radiate RHNs via Hawking evaporation late in the Universe's evolution when the temperature of the thermal plasma is low relative to the RHN mass. Subsequently, these RHNs can decay and produce a lepton asymmetry while the washout processes are suppressed.
