Neutrino Physics and Search for Light Dark Matter with SND@LHC

SND@LHC探测器预计将于2022年初准备就绪，并在2022年至2024年期间在大型强子对撞机（LHC）的3号运行中采集数据。该实验旨在测量在ATLAS实验的相互作用点LHC质子-质子碰撞中产生的电子中微子、介子中微子和τ中微子在一个尚未探索的能量和伪快度范围内的相互作用（能量：几个100 GeV到几个TeV；伪快度：7.2-8.6）。这不仅允许对中微子进行基本测试，而且还可以提高我们对天体粒子中微子实验中高能中微子产生的理解。目的是在此基础上开发中微子深度非弹性散射中产生的μ子和强子射流的校准和重建方法，为SND@LHC测量此类中微子相互作用做出重大贡献。他们还将使用这些重建方法来寻找可能在LHC的质子-质子相互作用中产生的轻暗物质粒子，这种相互作用目前还没有经过测试。

The SND@LHC detector is supposed to be ready beginning of 2022 and to take data in Run.3 of the Large Hadron Collider (LHC) in the period 2022-2024. The experiment aims to measure interactions of electron-, muon, and tau-neutrinos, which are produced in LHC proton-proton collisions in the interaction point of the ATLAS experiment, in an energy and pseudo-rapidity range yet unexplored (energies: several 100 GeV up to few TeV; pseudo-rapditities: 7.2-8.6). This not only allows for fundamental tests with neutrinos but also for improving our understanding of the production of high-energy neutrinos in astroparticle neutrino experiments. The aim is to develop calibration and reconstruction methods for muons and hadronic jets produced in neutrino deep-inelastic scattering, based on this work, to significantly contribute to the SND@LHC measurements of such neutrino interactions. They will use these reconstruction methods to search also for light dark matter particles potentially produced in the primary LHC proton-proton interactions in a regime that has not been tested so far.