标题： 中性电流中微子-原子核在中间能量下的相互作用 显示英文标题

标题： Neutral current neutrino-nucleus interactions at intermediate energies

摘要： 我们已经将我们的带电电流中微子-核子相互作用模型扩展到了中性电流反应。 对于基本的中微子-核子相互作用，我们考虑了准弹性散射、Delta激发以及第二共振区的共振激发。 我们对中微子-核子碰撞的模型包括介质效应，如费米运动， 泡利阻塞、核结合和终态相互作用。 这些效应通过吉森玻尔兹曼-温宁-乌伦贝克（GiBUU）耦合通道输运模型来实现。 这使我们能够研究独占道，即π介子产生和核子击出。 我们发现，终态相互作用通过再散射、电荷交换和吸收显著改变了分布。 由电荷交换散射引起的旁馈在这两种情况下都很重要。 在π介子的情况下，与Delta的介质中无π介子衰减模式相关存在强烈的吸收，而核子击出由于再散射表现出低能核子的显著增强。 在1GeV以上的中微子能量下，我们还发现，Delta激发对核子击出的贡献与准弹性散射相当。 显示英文摘要

摘要： We have extended our model for charged current neutrino-nucleus interactions to neutral current reactions. For the elementary neutrino-nucleon interaction, we take into account quasielastic scattering, Delta excitation and the excitation of the resonances in the second resonance region. Our model for the neutrino-nucleus collisions includes in-medium effects such as Fermi motion, Pauli blocking, nuclear binding, and final-state interactions. They are implemented by means of the Giessen Boltzmann-Uehling-Uhlenbeck (GiBUU) coupled-channel transport model. This allows us to study exclusive channels, namely pion production and nucleon knockout. We find that final-state interactions modify considerably the distributions through rescattering, charge-exchange and absorption. Side-feeding induced by charge-exchange scattering is important in both cases. In the case of pions, there is a strong absorption associated with the in-medium pionless decay modes of the Delta, while nucleon knockout exhibits a considerable enhancement of low energy nucleons due to rescattering. At neutrino energies above 1 GeV, we also obtain that the contribution to nucleon knockout from Delta excitation is comparable to that from quasielastic scattering.