论文标题

建模中微子核的相互作用在中间能量

Modeling neutrino-nucleus interaction at intermediate energies

论文作者

González-Jiménez, R., Jachowicz, N., Nikolakopoulos, A., Nys, J., Van Cuyck, T., Van Dessel, N., Niewczas, K., Pandey, V.

论文摘要

我们介绍了根特组在中微子核相互作用方面的研究活动的当前状态。这些由中间能量的某些相关中微子核反应通道进行建模:低能核激发,准弹性散射,两核子敲除过程和单杆菌产生。 使用Hartree-Fock-CRPA(连续元随机相位近似)模型描述了低能核激发和准峰峰,该模型考虑了核长距离相关性以及即将爆发的核素波函数的失真。我们通过短距离相关性和介子交换电流包括两体电流机制。计算了它们对单核子敲除响应的影响。在相同的平均场框架内处理结合和传出的核子。最后,为了建模中微子诱导的单杆-PION产生,我们使用了一个低能模型,该模型包含手性对称性所需的共鸣和背景贡献。这种低能模型与Regge方法合并为混合模型,这使我们能够对谐振区域的预测进行预测。

We present the current status of the research activities of the Ghent group on neutrino-nucleus interactions. These consist in the modeling of some of the relevant neutrino-nucleus reaction channels at intermediate energies: low-energy nuclear excitations, quasielastic scattering, two-nucleon knockout processes and single-pion production. The low-energy nuclear excitations and the quasielastic peak are described using a Hartree-Fock-CRPA (continuum random phase approximation) model that takes into account nuclear long-range correlations as well as the distortion of the outgoing nucleon wave function. We include two-body current mechanisms through short-range correlations and meson-exchange currents. Their influence on one- and two-nucleon knockout responses is computed. Bound and outgoing nucleons are treated within the same mean-field framework. Finally, for modeling of the neutrino-induced single-pion production, we use a low-energy model that contains resonances and the background contributions required by chiral symmetry. This low-energy model is combined with a Regge approach into a Hybrid model, which allows us to make predictions beyond the resonance region.

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