论文标题
将原始黑洞限制为Juno的暗物质
Constraining primordial black holes as dark matter at JUNO
论文作者
论文摘要
作为暗物质的有吸引力的候选者，可以通过鹰辐射（包括中子辐射，包括中子辐射和三种风味的反毒剂）来检测到质量范围的原始黑洞（PBH）（$ 10^{15} \ sim 10^{16} $）$ \ mathrm {g} $。在本文中，我们研究了通过测量（抗）中微子信号在大型江门地下中微子天文台（JUNO）的大型液体阶层检测器（JUNO）中测量（抗）中微子信号来限制PBH的可能性。在六个可用的检测通道中，逆β衰减$ \overlineν^{} _ e + p \ to e^ + + n $显示对PBH的分数$ f^{} _ {\ rm pbh} $最敏感的PBH $。给定PBH质量$ m^{} _ {\ rm pbh} = 10^{15}〜{\ rm g} $，我们发现Juno将能够放置一个上限的$ f^{} _ {\ rm pbh} _ {\ rm pbh} \ sillsim 3 \ times 10^\ times 10^\ 5} $ 20^{ - 5} $，以下是20次，这是20次，值$ f^{} _ {\ rm pbh} \ sillesim 6 \ times 10^{ - 4} $来自Super-Kamiokande。对于较重的鹰温度的较重的PBH，（抗）中微子的能量降低，导致结合相对较弱。
As an attractive candidate for dark matter, the primordial black holes (PBHs) in the mass range ($10^{15} \sim 10^{16}$)$\mathrm{g}$ could be detected via their Hawking radiation, including neutrinos and antineutrinos of three flavors. In this paper, we investigate the possibility to constrain the PBH as dark matter by measuring (anti)neutrino signals at the large liquid-scintillator detector of Jiangmen Underground Neutrino Observatory (JUNO). Among six available detection channels, the inverse beta decay $\overlineν^{}_e + p \to e^+ + n$ is shown to be most sensitive to the fraction $f^{}_{\rm PBH}$ of PBHs contributing to the dark matter abundance. Given the PBH mass $M^{}_{\rm PBH} = 10^{15}~{\rm g}$, we find that JUNO will be able to place an upper bound $f^{}_{\rm PBH} \lesssim 3\times 10^{-5}$, which is 20 times better than the current best limit $f^{}_{\rm PBH} \lesssim 6\times 10^{-4}$ from Super-Kamiokande. For heavier PBHs with a lower Hawking temperature, the (anti)neutrinos become less energetic, leading to a relatively weaker bound.
