RUI: Discovering New Sources of CP Violation in Flavor Phenomenology

RUI：发现风味现象学中 CP 破坏的新来源

• 批准号: 2310627
• 负责人: Bhubanjyoti Bhattacharya
• 金额: $ 15万
• 依托单位: Lawrence Technological University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-08-15 至 2026-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2310627&HistoricalAwards=false
• 关键词: RUI; Discovering; New; Sources; CP

This RUI award funds the research activities of Professor Bhubanjyoti Bhattacharya at Lawrence Technological University.Although highly successful, the Standard Model (SM) of Particle Physics has several limitations. One such limitation is its inability to resolve our universe's matter-antimatter asymmetry puzzle. The amount of matter in the universe --- surprisingly and unexpectedly –-- far exceeds the amount of antimatter. A fundamental symmetry called Charge-Parity (CP) relates matter with antimatter. As a result, any new physics beyond the SM (so-called "BSM" physics) must therefore have a large amount of CP violation in order to help solve this puzzle. Professor Bhattacharya's scientific research will provide further insight into our understanding of CP violation in BSM theories involving new hypothetical particles. Research in this area advances the national interest by promoting the progress of science in understanding the fundamental properties of nature through the creation of new theoretical frameworks. This project is also envisioned to have significant broader impacts. Undergraduate students at Lawrence Tech, working under the supervision of Professor Bhattacharya, will employ model-independent techniques to compare data with theory, identify deviations in experimental measurements from the SM, and create novel solutions in the form of new-physics models that alleviate tensions within the data. Professor Bhattacharya's students will thus become familiar with cutting-edge computational techniques and contribute to the future American workforce.More technically, Professor Bhattacharya will investigate the decay distributions of heavy mesons (such as B and D mesons) as functions of multiple kinematic variables, using several theoretical tools. He will employ flavor-SU(3) symmetry to investigate hadronic decays and effective-field theory approaches to explore semi-leptonic decays. His research will examine these decays in light of new-physics models with hypothetical particles such as vectorlike fermions, leptoquarks, axionlike particles, and higgslike particles. These projects will create opportunities for delivering a scientific research-based education to undergraduate students while generating increased interest in and greater understanding of particle physics research among the general public.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该RUI奖资助劳伦斯理工大学Bhubanjyoti Bhattacharya教授的研究活动。粒子物理学的标准模型（SM）虽然非常成功，但也有一些局限性。其中一个限制是它无法解决我们宇宙的物质-反物质不对称之谜。宇宙中物质的数量——令人惊讶和出乎意料——远远超过了反物质的数量。一种称为电荷宇称（CP）的基本对称将物质与反物质联系起来。因此，任何超越SM的新物理（所谓的“BSM”物理）都必须有大量的CP违反，以帮助解决这个难题。Bhattacharya教授的科学研究将进一步加深我们对涉及新假设粒子的BSM理论中CP违逆的理解。这一领域的研究通过创造新的理论框架，促进科学在理解自然基本属性方面的进步，从而促进国家利益。预计该项目还将产生更广泛的重大影响。劳伦斯理工学院的本科生将在Bhattacharya教授的指导下，采用独立于模型的技术将数据与理论进行比较，识别实验测量与SM的偏差，并以新物理模型的形式创建新的解决方案，以缓解数据中的紧张关系。因此，巴塔查里亚教授的学生将熟悉尖端的计算技术，并为未来的美国劳动力做出贡献。更技术性的是，Bhattacharya教授将使用几种理论工具，研究重介子（如B介子和D介子）作为多个运动变量函数的衰变分布。他将使用flavor-SU(3)对称性来研究强子衰变，并使用有效场理论方法来研究半轻子衰变。他的研究将根据新的物理模型来检验这些衰变，这些模型采用了假设的粒子，如类矢量费米子、轻夸克、类轴子粒子和类希格斯粒子。这些项目将为本科生提供以科学研究为基础的教育创造机会，同时提高公众对粒子物理研究的兴趣和理解。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。