论文标题
从$^{16} $ o（$ν，ν^{\ prime} $）$^{16} $ o（12.97 $ {\ rm mev}，2^ - ）$检测4.4-mev伽玛射线（$^{16}
Detection of the 4.4-MeV gamma rays from $^{16}$O($ν, ν^{\prime}$)$^{16}$O(12.97 ${\rm MeV}, 2^-)$ with a water-Cherenkov detector in the supernova neutrino bursts
论文作者
论文摘要
我们首先讨论并确定了使用无弹性电子散射数据的$^{16} $ o nucleus的两个$ 2^ - $状态（12.53 MeV和12.97 MeV）的同胞混合。然后，我们评估中微子中微子中性 - 电流（NC）产生的4.4-mev $γ$射线$^{16} $ o（$ν，nc）$（$ν^{\ prime} $）$^{16} $ O $ $ $ $（12.97 {\ rmMev}，2^ - 2^ - $）在水cherenkov中intertation。从NC反应$^{16} $ o（$ν，ν，ν^{\ prime} $）$^{16} $ O $（e_x> 16 \ {\ rm mev}，t = 1 $）与Water Chereenkov detector讨论Supernove的$e_γ> 5 $ meV的检测 之前。在本文中，我们讨论了一个新的NC反应渠道，从$^{16} $ O（12.97 $ {\ rm mev}，2^ - $），生产4.4-mev $γ$ ray，其横截面更强大，在$^$^$^$^$^$^$^$^$^$^$^$^16} coss cross（$e_ν<25 $）上更大，甚至更大mev}，t = 1 $）。我们还评估了超新星爆炸中的中微子引起的此类事件的数量，这是地球上32 kton Water Cherenkov检测器的Super-Kamiokande可以观察到的。
We first discuss and determine the isospin mixing of the two $2^-$ states (12.53 MeV and 12.97 MeV) of $^{16}$O nucleus using the inelastic electron scattering data. We then evaluate the cross section of 4.4-MeV $γ$ rays produced in the neutrino neutral-current (NC) reaction $^{16}$O($ν, ν^{\prime}$)$^{16}$O$(12.97 {\rm MeV}, 2^-$) in a water Cherenkov detector at the low energy below 100 MeV. The detection of $γ$ rays for $E_γ>5$ MeV from the NC reaction $^{16}$O($ν, ν^{\prime}$)$^{16}$O$(E_x>16\ {\rm MeV}, T=1$) with a water Cherenkov detector in the supernova neutrino bursts has been proposed and discussed by several authors previously. In this article, we discuss a new NC reaction channel from $^{16}$O(12.97 ${\rm MeV}, 2^-$) producing a 4.4-MeV $γ$ ray, the cross section of which is more robust and even larger at the low energy ($E_ν<25$ MeV) than the NC cross section from $^{16}$O$(E_x>16\ {\rm MeV}, T=1$). We also evaluate the number of such events induced by neutrinos from supernova explosion which can be observed by the Super-Kamiokande, a 32 kton water Cherenkov detector in the Earth.
