Investigations in High Energy Physics

高能物理研究

• 批准号: 1820760
• 负责人: Ayres Freitas
• 金额: $ 48万
• 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: 2018
• 资助国家: 美国
• 起止时间: 2018-09-15 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1820760&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. As part of their research, Professors Freitas and Leibovich aim to develop improved theoretical tools and calculational methods for the robust interpretation of results from current and future particle-physics experiments, both at the highest-energy colliders and at dedicated experiments searching for dark matter. In particular, they will develop advanced techniques for identifying a potentially small new physics signal --- an endeavor that requires an extremely precise understanding of known particles and interactions. Furthermore, Professors Freitas and Leibovich will investigate the phenomenological implications of various types of dark-matter models, with particular attention to scenarios that will be extremely difficult to probe in most search experiments. To constrain these models, it is therefore crucial to combine laboratory searches with constraints from astrophysics and cosmology. As such, research in this area advances the national interest by fostering the development of basic science within the United States and expanding our knowledge of fundamental physical laws. This project will also involve educating several PhD students and a postdoctoral researcher in cutting-edge calculational and analysis tools. Professors Freitas and Leibovich also plan to work closely with astrophysicists and high-energy experimentalists to develop new search and analysis strategies that will aid in the search for new physics and improve the precision and theoretical robustness of our present understanding. 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, the research program of Professors Freitas and Leibovich can be divided into three 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 Jefferson Laboratory and the MESA accelerator; (2) The application of effective field theories, in particular Soft-Collinear Effective Theory, for production of jets at the Large Hadron Collider, fragmentation of partons into hadrons, and new physics signatures; and (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 probed with non-traditional experimental setups rather than at high-energy colliders. This research plan is guided by ongoing and planned experimental particle-physics efforts, and results will be made available to the experimental community in a suitable form.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。 作为研究的一部分，Freitas和Leibovich教授旨在开发改进的理论工具和计算方法，以在最高能量的校友和专门的实验中对当前和未来的粒子物理学实验的结果进行强有力的解释。 特别是，他们将开发出高级技术来识别潜在的小型新物理信号，这是一项努力，需要对已知粒子和相互作用有极为精确的理解。 此外，Freitas教授和Leibovich将研究各种类型的黑暗模型的现象学含义，并特别关注大多数搜索实验中很难探究的情况。 为了限制这些模型，将实验室搜索与天体物理学和宇宙学的限制相结合至关重要。 因此，该领域的研究通过促进美国基础科学的发展并扩大我们对基本物理定律的了解来提高国家利益。 该项目还将涉及教育几位博士生和一名博士后研究人员，以了解最先进的计算和分析工具。 Freitas和Leibovich教授还计划与天体物理学家和高能量实验者紧密合作，以制定新的搜索和分析策略，以帮助搜索新物理学，并提高我们当前理解的精确性和理论鲁棒性。 Freitas和Leibovich教授还将帮助组织研讨会和暑期学校，将现代研究的结果传播到更多的学生和年轻研究人员中。从技术上讲，弗雷塔斯教授和莱博维奇的研究计划可以分为三个主要部分：（1）对于较高级别的校正，可以在Electoreak Precision precision procisional中开发+ETROWEAK PECISISERABLES的计算技术，以+ETROWEAK PRATICERS的开发。杰斐逊实验室和梅萨加速器目前正在开发的低能精度实验； （2）应用有效的现场理论，特别是软性共线有效理论，用于在大型强子对撞机上生产喷气机，将partons的碎片化成辐射，以及新的物理学特征； （3）对标准模型的各种黑暗扇区扩展的研究，包括光线弱耦合的信使田，可以通过非传统的实验设置来更有效地探测，而不是在高能量乘务器上。 该研究计划以持续和计划的实验性粒子物理学的努力为指导，结果将以合适的形式向实验社区提供。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的智力优点评估来获得支持的，并具有更广泛的影响。

项目成果

Second post-Newtonian order radiative dynamics of inspiralling compact binaries in the effective field theory approach

有效场论方法中吸气致密双星的第二后牛顿级辐射动力学

• DOI: 10.1103/physrevd.101.084058
• 发表时间: 2020
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Leibovich, Adam K.;Maia, Natália T.;Rothstein, Ira Z.;Yang, Zixin
• 通讯作者: Yang, Zixin

Electroweak pseudo-observables and Z-boson form factors at two-loop accuracy

• DOI: 10.1007/jhep08(2019)113
• 发表时间: 2019-06
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: I. Dubovyk;A. Freitas;J. Gluza;T. Riemann;J. Usovitsch

TVID 2: evaluation of planar-type three-loop self-energy integrals with arbitrary masses

TVID 2：任意质量平面型三环自能积分的评估

• DOI: 10.1007/jhep01(2020)024
• 发表时间: 2020
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: Bauberger, Stefan;Freitas, Ayres;Wiegand, Daniel
• 通讯作者: Wiegand, Daniel

Analytic solutions to compact binary inspirals with leading order spin-orbit contribution using the dynamical renormalization group

使用动态重正化群对具有前导自旋轨道贡献的紧凑二元螺旋的解析解

• DOI: 10.1103/physrevd.100.084021
• 发表时间: 2019
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Yang, Zixin;Leibovich, Adam K.
• 通讯作者: Leibovich, Adam K.

Heavy quark jet production near threshold

• DOI: 10.1007/jhep09(2021)148
• 发表时间: 2021-04
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: L. Dai;Chul Kim;A. Leibovich