在Genie中为KM3NeT和其他观测站进行的NLO高能中微子事件模拟
High-energy neutrino event simulation at NLO in Genie for KM3NeT and other observatories
摘要：
高能中微子天文学是多信使天文学的一个关键支柱，也有可能推进基础中微子物理学。中微子相互作用的精确模拟是分析中微子望远镜数据的关键。目前可用的中微子相互作用的生成器代码使用的微分截面，支配率和事件的运动学的领先秩序的表达式。这些计算受到众所周知的大的理论不确定性的影响，因此需要超越领导阶形式主义。此外，还需要一致地使用现代部分子密度函数，这些密度函数是使用NLO（或NNLO）框架导出的。由于这个原因和其他原因，中微子相互作用的GENIE事件发生器，这是几个GeV能量范围内的标准工具，迄今为止被认为只有大约1 TeV有效。这里报告的工作包括一个高能量（高达10 $^{10}$ GeV）的扩展，这将是在GENIEv 4。它接口PYTHIA 6的强子化，并采用务实的方法来分配罢工和外出夸克的味道，使重夸克的生产，包括底部和顶部，也正确地模拟。
英文摘要：
High-energy neutrino astronomy is a key pillar of multi-messenger astronomy and has the potential to also advance fundamental neutrino physics. An accurate simulation of the neutrino interactions is key in any analysis of neutrino telescope data. The currently available generator codes of neutrino interactions use leading order expressions for the differential cross sections which govern rate and kinematics of the events. These calculations are affected by well-known large theoretical uncertainties, hence the need of beyond leading order formalism. Also, a consistent use of modern Parton Density Functions, which are derived using NLO (or NNLO) frameworks, is required. For this reason and others, the GENIE event generator of neutrino interactions, which is a standard tool in the few-GeV energy regime, has so far been stated to be valid up to only about 1 TeV. The work reported here consists of a high-energy (up to 10$^{10}$ GeV) extension, which will be available in GENIEv4. It interfaces PYTHIA6 for the hadronization and employs a pragmatic method to assign the flavour of the struck and outgoing quarks, so that the heavy quark production, including bottom and top, is also correctly simulated.
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