Dark New Physics

对星系团运动的观察使天文学家得出结论，除了构成我们所看到的行星和恒星的可见物质之外，我们的宇宙中还存在一种新的物质来源。这种“暗物质”之所以被称为“暗物质”，是因为它不与光相互作用，据估计，它占宇宙中物质的85%。虽然粒子物理学家对构成可见物质的粒子有很多了解，但我们还没有观察到一种粒子对应于所有的暗物质。暗物质候选者的发现将彻底改变人类对我们所居住的宇宙的理解，并改变粒子物理学，天文学等领域的研究。我将寻找隐藏在新粒子“黑暗区域”中的暗物质。虽然这些粒子不被认为与标准粒子相互作用，从而挑战传统的直接检测方法，但它们可以通过所谓的“门户相互作用”与标准粒子连接。我将利用在欧洲核子研究中心的大型强子对撞机美容（LHCb）实验中收集的数据来寻找这些相互作用的证据。我的提议利用了新的“Run 3”（2022-2024）LHCb数据集的统计能力，将暗区搜索的可用数据增加了30倍。更大的数据集是好的，但对于暗区搜索来说，新的探测器覆盖范围更好，所以我将利用我以前负责LHCb探测器项目的经验，领导一个新实验CODEX-b的调试，为运行4（2027-2030）及以后的暗物质搜索提供新的灵敏度。

Observations of the movements of galaxy clusters have led astronomers to conclude that a new source of matter exists in our universe, in addition to the visible matter that makes up the planets and stars that we see. This 'dark matter', so called because it does not interact with light, is estimated to be responsible for 85% of matter in the Universe. Although particle physicists understand much about the particles that make up visible matter, we have not yet observed a particle corresponding to all the dark matter. The discovery of a dark matter candidate will revolutionise humanity's understanding of the universe we inhabit, and transform research in particle physics, astronomy, and beyond.I will search for dark matter hidden in a 'dark sector' of new particles. Although these particles are not thought to interact with standard particles, and thus challenge conventional direct-detection approaches, they can connect to standard particles through so-called 'portal interactions'. I will harness data collected during collisions in the Large Hadron Collider beauty (LHCb) experiment at CERN to search for evidence of these interactions. My proposal harnesses the statistical power of the new 'Run 3' (2022-2024) LHCb dataset, increasing the available data for dark-sector searches there by up to a factor of 30. Bigger datasets are good, but for dark-sector searches new detector coverage is even better, so I will build on my previous experience in charge of an LHCb detector project to lead the commissioning of a new experiment, CODEX-b, providing new sensitivity for dark-matter searches during Run 4 (2027-2030) and beyond.