Dark New Physics

黑暗新物理

• 批准号: ST/W004305/1
• 负责人: Daniel Johnson
• 金额: $ 80.05万
• 依托单位: University of Birmingham
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FW004305%2F1
• 关键词: Dark; New; Physics

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.

对星系团运动的观察使天文学家得出结论，除了组成我们所看到的行星和恒星的可见物质外，我们的宇宙中还存在着一种新的物质来源。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，它负责宇宙中85%的物质。尽管粒子物理学家对构成可见物质的粒子了解很多，但我们还没有观察到一个与所有暗物质相对应的粒子。暗物质候选者的发现将彻底改变人类对我们居住的宇宙的理解，并改变粒子物理、天文学和其他领域的研究。我将寻找隐藏在新粒子的“暗区域”中的暗物质。尽管这些粒子被认为不会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”连接到标准粒子。我将利用在欧洲核子研究中心的大型强子对撞机美容(LHCb)实验中收集的碰撞数据来寻找这些相互作用的证据。我的建议利用了新的‘Run 3’(2022-2024年)LHCb数据集的统计能力，将可用于暗区搜索的数据增加了高达30倍。更大的数据集是好的，但对于暗部门搜索，新的探测器覆盖范围更好，所以我将以我之前负责LHCb探测器项目的经验为基础，领导一个新实验Codex-b的委托，为第四次(2027-2030年)及以后的暗物质搜索提供新的灵敏度。

项目成果

Study of charmonium decays to K S 0 K p in the B ? ( K S 0 K p ) K channels

研究粲素在 B 中衰变为 K S 0 K p ？

• DOI: 10.1103/physrevd.108.032010
• 发表时间: 2023
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Aaij R