论文标题
连贯的弹性中微子核散射中依赖风味的辐射校正
Flavor-dependent radiative corrections in coherent elastic neutrino-nucleus scattering
论文作者
论文摘要
我们在标准模型中以低于100 MEV的能量计算了Spin-0核（例如$^{40} $ ar和$^{28} $ SI）上的相干弹性中微子核散射横截面（例如$^{40} $ ar和$^{28} $ si）。我们提供了一个完整的误差预算，包括分别在核，核子，耐药和夸克水平的不确定性以及扰动误差。我们的计算始于四个弗里米昂有效的野外理论，以明确分开重粒子介导的校正（由威尔逊系数吸收）与光颗粒的贡献。在循环中运行的电子和兆粒引起了对动量转移的非平凡依赖，因为它们的质量相对较轻。这些相同的环和由tau瘦素介导的循环由于质量依赖性电磁辐射校正而打破了风味普遍性。核物理不确定性显着取消风味不对称，导致次级相对误差。我们发现，对于低中微子能量，可以用相对的精度与中性电子散射竞争，可以预测横截面。我们重点介绍了这种精确的横截面预测的潜在有用的应用，从标准模型的精确测试到搜索新物理学和监测核反应堆。
We calculate coherent elastic neutrino-nucleus scattering cross sections on spin-0 nuclei (e.g. $^{40}$Ar and $^{28}$Si) at energies below 100 MeV within the Standard Model and account for all effects of permille size. We provide a complete error budget including uncertainties at nuclear, nucleon, hadronic, and quark levels separately as well as perturbative error. Our calculation starts from the four-fermion effective field theory to explicitly separate heavy-particle mediated corrections (which are absorbed by Wilson coefficients) from light-particle contributions. Electrons and muons running in loops introduce a nontrivial dependence on the momentum transfer due to their relatively light masses. These same loops, and those mediated by tau leptons, break the flavor universality because of mass-dependent electromagnetic radiative corrections. Nuclear physics uncertainties significantly cancel in flavor asymmetries resulting in subpercent relative errors. We find that for low neutrino energies, the cross section can be predicted with a relative precision that is competitive with neutrino-electron scattering. We highlight potentially useful applications of such a precise cross section prediction ranging from precision tests of the Standard Model, to searches for new physics and to the monitoring of nuclear reactors.
