Theory and Phenomenology at the Frontiers of the Standard Model

这个奖项资助了北伊利诺伊大学斯蒂芬·P·马丁教授的研究活动。这个项目将促进我们对作为物质基本成分的粒子以及控制它们在极短距离尺度上相互作用的物理定律的了解。对这些问题有新的理解的一个重要途径是研究高能粒子的碰撞。瑞士日内瓦欧洲核子研究组织实验室的大型强子对撞机(LHC)是目前世界上能量最高的对撞机设施，负责在2012年发现希格斯玻色子粒子。它现在以更高的能量和更快的速度获取更多的数据，为发现提供了新的机会。作为研究的一部分，马丁教授将加强对希格斯玻色子和其他已知粒子的理解，并制定在大型强子对撞机和计划中的未来对撞机上探测新的未知粒子的策略。他还将进行前所未有的精确计算，预测和解释已知力量和拟议中的新力量的含义。这些活动将增进我们对自然如何在最根本层面上运作的理解，从而促进国家利益。该项目还将产生更广泛的影响。马丁将对本科生和研究生进行科学研究方法的培训和指导。他还将通过科学外展和在当地和地区科学博览会上的评委与当地年轻的学生和其他感兴趣的公众直接互动。更严格地说，马丁将继续他对超对称理论的研究。这些模型预测，对于每一种已知类型的基本粒子，一定会有另一种具有类似性质的基本粒子，但它们的质量比目前已知的要重得多。他将研究轴子超对称理论中的可能作用，这可以解释为什么在强核力中没有大型的CP破坏相互作用。马丁将在大型强子对撞机上开发超对称粒子的搜索策略，并在未来的各种类型的实验中，包括质子-质子、电子-正电子和Muon-Antimuon对撞机，特别关注已知更难探测的压缩质谱图。他将对其他新的物理模型做同样的事情，包括那些预测具有矢量型规范相互作用的新费米子的模型。他将通过开发新的计算方法来研究量子场论中的多回路积分，并将其应用于精确评估粒子物理学的基本参数，包括规范玻色子和希格斯玻色子之间以及与夸克和轻子之间的质量和相互作用耦合。这一奖项反映了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 award funds the research activities of Professor Stephen P. Martin at Northern Illinois University.This project will advance our knowledge of the particles that are the basic constituents of matter, and the physical laws governing their interactions at very short distance scales. An important way of gaining new understanding of these topics is to study collisions of particles at very high energies. The Large Hadron Collider (LHC) at the CERN Laboratory in Geneva, Switzerand, is currently the most energetic collider facility in the world, and was responsible for discovering the Higgs boson particle in 2012. It is now taking more data at a higher energy and faster rates, providing new chances for discovery. As part of his research, Professor Martin will pursue an enhanced understanding of the Higgs boson and other known particles, as well as develop strategies for detecting new unknown particles at the LHC and at planned future colliders. He will also perform calculations of unprecedented accuracy that predict and explain the implications of the known forces and proposed new forces. These activities will advance the national interest by improving our understanding of how nature works at the most fundamental level. This project will also have broader impacts. Martin will train and mentor university students at both the undergraduate and graduate levels on methods of scientific research. He will also interact directly with younger local students and other interested members of the public through science outreach exhibitions and judging at local and regional science fairs.More technically, Martin will continue his research on supersymmetric theories. These models predict that for each of the known types of fundamental particles, there must be another type with similar properties, but which are much heavier than those presently known. He will study the possible role in supersymmetric theories of axions, which can explain the absence of large CP-violating interactions in the strong nuclear force. Martin will develop search strategies for supersymmetric particles at the LHC, and at future experiments of various types, including proton-proton, electron-positron, and muon-antimuon colliders, with particular attention to compressed mass spectra which are known to be harder to probe. He will do the same for other new physics models, including those that predict new fermions with vector-like gauge interactions. He will work on multi-loop integrals in quantum field theories by developing new methods for their computation, with applications to precise evaluation of the basic parameters of particle physics, including the masses and interaction couplings of gauge bosons and the Higgs boson with each other and with quarks and leptons.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.