论文标题
MEV暗物质歼灭和衰减的中微线线
Neutrino lines from MeV dark matter annihilation and decay in JUNO
论文作者
论文摘要
我们以独立模型的方式讨论了MEV暗物质（DM）歼灭和衰减中中微子线的发现潜力。我们发现，Juno将能够在DM的横截面上给中微子的横截面以及DM衰减成中微子的寿命。更具体地说，在基准数量$ 17 $ kton中，$ 20 $年的数据获取数据将小于$ 4 \ times 10^{ - 26} \，{\ rm cm^{3} \，sec^{ - sec^{ - 1}}} $，以供$ 15 \ \ mm mev，sep sec^{ - 1}} $ 50 \，{\ rm mev} $售价$ 90 \，\％$ c.l。，它可能足够强，可以在此类DM质量范围内测试DM颗粒的热生产机制。对于DM粒子的质量，寿命将被限制为$ 1 \ times 10^{24} \，{\ rm sec} $
We discuss the discovery potential of JUNO experiment for neutrino lines from MeV dark matter (DM) annihilation and decay in a model independent way. We find that JUNO will be able to give severe constraints on the cross section of DM annihilating into neutrinos and on the lifetime of DM decaying into neutrinos. More concretely, with $20$ years of data-taking in the fiducial volume $17$ kton, the cross section will be constrained smaller than $4\times 10^{-26}\,{\rm cm^{3}\,sec^{-1}}$ for the mass of a DM particle $15\,{\rm MeV} \lesssim m_χ \lesssim 50\,{\rm MeV}$ at $90\,\%$ C.L., which might be strong enough to test thermal production mechanism of DM particles for such range of DM mass. The lifetime will be constrained as strong as $1\times 10^{24}\,{\rm sec}$ for the mass of a DM particle $m_χ \simeq 100\,{\rm MeV}$ at $90\,\%$ C.L..
