Investigations in High Energy Physics

高能物理研究

• 批准号: 2112829
• 负责人: Ayres Freitas
• 金额: $ 54万
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-15 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2112829&HistoricalAwards=false
• 关键词: Investigations; Energy; Physics

This award funds the research activities of Professors Ayres Freitas and Adam Leibovich at the University of Pittsburgh. The purpose of this project is to develop improved theoretical tools and calculational methods for the robust interpretation of results from current and future physics experiments. Advanced techniques for identifying potentially small new physics signals from large backgrounds require excellent understanding of known particles and interactions as well as the development of new methods to calculate these processes. A wide variety of phenomena will be investigated, from sub-atomic particles to gravity to cosmology. Professors Freitas and Leibovich also plan to work closely with colleagues in high-energy experiments and astrophysics to develop new search and analysis techniques for new physics and to improve the precision and theoretical robustness of tests of our current understanding of the Universe. Research in these areas thus advances the national interest by expanding our knowledge of fundamental physical laws and educating young scientists in cutting-edge calculational and analysis tools. The broader impacts of this research program include the training and professional development of several PhD students and a postdoc. Professors Freitas and Leibovich will also help to organize workshops and summer schools to disseminate results from modern research to a larger audience of students and young researchers.More technically, this research program can be divided into four main parts: (1) The development of calculational techniques for higher-order corrections to electroweak precision observables, which are relevant for planned future e+e- colliders as well as for several low-energy precision experiments currently in development at JLab and MESA; (2) The application of effective field theories, in particular Soft-Collinear Effective Theory, for production of jets at the LHC, for fragmentation of partons into hadrons, and for new physics signatures; (3) An investigation of a varied class of dark sector extensions of the Standard Model, including light weakly coupled messenger fields that could be more efficiently searched for with non-traditional experimental setups rather than at high-energy colliders; and (4) Calculations of precise gravitational wave physics using effective field theory techniques. In this context it is important to check the consistency of a viable model setup with a large range of experimental and theoretical constraints. This research plan is guided by ongoing and planned experimental particle physics efforts, and results will be made available to the experimental community.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.

该奖项为匹兹堡大学的Ayres Freitas和Adam Leibovich教授的研究活动提供了资金。 该项目的目的是开发改进的理论工具和计算方法，以对当前和未来的物理实验的结果进行强有力的解释。 用于识别来自大型背景的潜在小物理信号的先进技术需要对已知粒子和相互作用以及开发计算这些过程的新方法的开发。 将研究各种现象，从亚原子颗粒到重力再到宇宙学。 Freitas和Leibovich教授还计划与高能实验和天体物理学中的同事紧密合作，以开发新物理学的新搜索和分析技术，并提高我们当前对宇宙的理解的测试的精确性和理论鲁棒性。 因此，在这些领域的研究通过扩大我们对基本物理定律的了解并教育年轻科学家在最先进的计算和分析工具方面提高了国家利益。 该研究计划的更广泛影响包括对几位博士生的培训和专业发展和一个博士后。 Professors Freitas and Leibovich will also help to organize workshops and summer schools to disseminate results from modern research to a larger audience of students and young researchers.More technically, this research program can be divided into four main parts: (1) The development of calculational techniques for higher-order corrections to electroweak precision observables, which are relevant for planned future e+e- colliders as well as for several low-energy precision experiments currently in development在Jlab和Mesa； （2）将有效的现场理论（特别是软性有效理论）应用于LHC在LHC上生产喷气机的应用，用于将Partons分散到Hadron中，以及用于新的物理学特征； （3）对标准模型的不同类别的黑暗扇区扩展的研究，包括弱耦合的使者田，可以通过非传统的实验设置来更有效地搜索，而不是在高能量的乘务器上进行搜索； （4）使用有效的现场理论技术计算精确的重力波物理。在这种情况下，重要的是检查具有大量实验和理论约束的可行模型设置的一致性。 该研究计划以持续和计划的实验性粒子物理工作为指导，结果将为实验社区提供。该奖项反映了NSF的法定任务，并使用基金会的智力优点和更广泛的影响审查标准，认为值得通过评估来获得支持。

项目成果

Heavy neutral leptons at the Electron-Ion Collider

• DOI: 10.1007/jhep03(2023)020
• 发表时间: 2022-10
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: B. Batell;T. Ghosh;T. Han;K. Xie

Radiation reaction for nonspinning bodies at 4.5PN in the effective field theory approach

有效场论方法中 4.5PN 处非旋转体的辐射反应

• DOI: 10.1103/physrevd.108.024017
• 发表时间: 2023
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Leibovich, Adam K.;Pardo, Brian A.;Yang, Zixin
• 通讯作者: Yang, Zixin

Higgs boson decay to charmonia via c-quark fragmentation

• DOI: 10.1007/jhep08(2022)073
• 发表时间: 2022-02
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: T. Han;A. Leibovich;Yang Ma;Xiao-Ze Tan

Leading fermionic three-loop corrections to W-boson mass and Z-pole observables

对 W 玻色子质量和 Z 极可观测值进行领先的费米子三环校正

• DOI: 10.21468/scipostphysproc.7.019
• 发表时间: 2022
• 期刊: SciPost Physics Proceedings
• 作者: Chen, Lisong;Freitas, Ayres
• 通讯作者: Freitas, Ayres

Parton distributions need representative sampling

• DOI: 10.1103/physrevd.107.034008
• 发表时间: 2022-05
• 期刊: Physical Review D
• 影响因子: 5
• 作者: A. Courtoy;Joey Houston;P. Nadolsky;K. Xie;Mengshi Yan;C. Yuan