论文标题
将中微子和相对论的黑暗颗粒提升为重新加热的使者
Boosted Neutrinos and Relativistic Dark Particles as Messengers from Reheating
论文作者
论文摘要
通常，很难从早期时代（例如再加热）获得信息。在本文中，我们认为，在适当的情况下，在相对较晚的右撇子中，右手无菌中微子会腐烂到左手活跃的中微子，可以通过在热历史上自由传播来携带重新加热的信息。对于不太小的混合角度，合适的右中微子质量约为$ {\ cal o} $（mev-gev）。我们确定了典型的光谱，并认为它们提供有关充气质量与加热温度比率的信息。这种原始中微子信号可以足够强，可以在IceCube中检测到它。更猜测，对于重新加热温度和充气质量，满足$ t_r = {\ cal o}（1-100）\，{\ rm mev} $，$ m_Dcartion = {\ cal o}（10^{16-19}）\，$ GEV，他们甚至可以解释观察到的PEV事件。此外，更一般的相对论黑粒子可以扮演此类使者的角色，不仅允许PEV事件，而且还可以减轻$ H_0 $ - 张力。
Usually information from early eras such as reheating is hard to come by. In this paper we argue that, given the right circumstances, right-handed sterile neutrinos decaying to left-handed active ones at relatively late times can carry information from reheating by propagating freely over the thermal history. For not too small mixing angles, suitable right-handed neutrino masses are around ${\cal O}$(MeV-GeV). We identify the typical spectra and argue that they provide information on the ratio of the inflaton mass to the reheating temperature. This primordial neutrino signal can be strong enough that it can be detected in IceCube. More speculatively, for a reheating temperature and inflaton mass satisfying $T_R={\cal O}(1-100)\, {\rm MeV}$, and $m_ϕ={\cal O}(10^{16-19})\,$GeV they may even explain the observed PeV events. Also more general relativistic dark particles can play the role of such messengers, potentially not only allowing for the PeV events but also alleviating the $H_0$-tension .
