一个简单的对称性作为超越标准模型的新物理学的指南
A simple symmetry as a guide toward new physics beyond the Standard Model
摘要：
有一个实验结果无法用粒子物理学的当前理论框架标准模型（SM）来解释：中微子（接近光速、电中性和弱相互作用的基本粒子）的非零质量。SM假设它们是无质量的。因此，粒子物理学家现在正在探索SM之外的新物理。有强烈的期望，我们即将解开它，在新的物质和/或力量的形式，在大型强子对撞机（LHC），目前在欧洲核子研究中心运行。我们讨论了SM的最小扩展，基于其对称结构和粒子含量的更大版本，可以自然地解释中微子质量的存在，同时也预测了LHC可以获得的新信号，包括轻希格斯玻色子，如目前的数据所证明的。
英文摘要：
There exists one experimental result that cannot be explained by the Standard Model (SM), the current theoretical framework for particle physics: non-zero masses for the neutrinos (elementary particles travelling close to light speed, electrically neutral and weakly interacting). The SM assumes that they are massless. Therefore, particle physicists are now exploring new physics beyond the SM. There is strong anticipation that we are about to unravel it, in the form of new matter and/or forces, at the Large Hadron Collider (LHC), presently running at CERN. We discuss a minimal extension of the SM, based on a somewhat larger version of its symmetry structure and particle content, that can naturally explain the existence of neutrino masses while also predicting novel signals accessible at the LHC, including a light Higgs boson, as evidenced by current data.
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