RUI: Discovering New Sources of CP Violation in Flavor Phenomenology

该奖项资助劳伦斯技术大学布班约蒂·巴塔查里亚教授的研究活动。尽管非常成功，但粒子物理的标准模型(SM)有几个局限性。一个这样的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-令人惊讶和意外-远远超过反物质的数量。一种称为电荷宇称(CP)的基本对称性将物质与反物质联系在一起。因此，任何超越SM的新物理学(所谓的“BSM”物理学)都必须有大量的CP破坏才能帮助解开这个谜题。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破坏的理解。这一领域的研究通过建立新的理论框架，促进了科学在理解自然基本属性方面的进步，从而促进了国家利益。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在Bhattacharya教授的指导下工作，将使用与模型无关的技术来比较数据和理论，识别实验测量结果与SM的偏差，并以新物理模型的形式创造新的解决方案，以缓解数据中的紧张局势。因此，Bhattacharya教授的学生将熟悉尖端计算技术，并为未来的美国劳动力做出贡献。更严格地说，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)的衰变分布作为多个运动学变量的函数。他将利用味-苏(3)对称性来研究强子衰变，并用有效场论的方法来探索半轻子衰变。他的研究将根据假设粒子的新物理模型来检验这些衰变，这些粒子包括矢量型费米子、轻夸克、轴子粒子和类希格斯粒子。这些项目将创造机会，为本科生提供以科学研究为基础的教育，同时提高公众对粒子物理研究的兴趣和更多了解。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

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.