Multi-loop amplitudes and precise predictions for the LHC

LHC 的多环振幅和精确预测

• 批准号: 2013859
• 负责人: Andreas von Manteuffel
• 金额: $ 24万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2013859&HistoricalAwards=false
• 关键词: Multi; loop; amplitudes; precise; predictions

This award funds the research activities of Professor Andreas von Manteuffel at Michigan State University.One way of understanding matter and interactions at a fundamental level is by colliding small subatomic particles against each other at high energies and examining the new particles that may emerge. For this reason, collider experiments are crucial for this quest. The Large Hadron Collider (LHC) at the CERN Laboratory allows for precision physics at very high energies, probing details of the current so-called "Standard Model" of particle physics and searching for small signals of possible new physics beyond it. The research of Professor von Manteuffel enables particularly precise theory predictions in order to draw firm conclusions from available and future collider data. New computational methods allow for the formulation of theoretical predictions with unprecedented precision and lead to an improved structural understanding of the theoretical framework, perturbative quantum field theory, which underlies these calculations. As such, this research advances the national interest by promoting the progress of science in one of its purest forms: the understanding of the basic laws of Nature. Bridging the fields of theoretical physics, applied mathematics, and computer science, this project is also expected to have a broad impact beyond the primary field of study. This project will also involve the training of graduate students and postdoctoral fellows in theoretical physics and other disciplines, equipping them with strong skills, both in analytical reasoning and information technology.More technically, Professor von Manteuffel will calculate radiative corrections for LHC observables involving the Higgs boson, W and Z bosons, the top quark, and other particles at high perturbative orders in the gauge theory of strong and electroweak interactions. A central focus will be on the calculation of scattering amplitudes and Feynman integrals with multiple loops, multiple legs, and internal masses. These calculations are enabled by the development of improved computational methods, ranging from symbolic to numerical approaches and employing high-performance computers.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.

该奖项资助了密歇根州立大学的Andreas von Manteuteur教授的研究活动。在基础水平上理解物质和相互作用的一种方法是通过使小的亚原子粒子在高能量下相互碰撞，并检查可能出现的新粒子。 因此，对撞机实验对于这一探索至关重要。 CERN实验室的大型强子对撞机（LHC）可以在非常高的能量下进行精确的物理学研究，探测当前所谓的粒子物理学“标准模型”的细节，并寻找可能超越它的新物理学的小信号。冯·曼特伊特教授的研究可以实现特别精确的理论预测，以便从现有和未来的对撞机数据中得出明确的结论。 新的计算方法允许制定的理论预测与前所未有的精度，并导致一个更好的结构理解的理论框架，微扰量子场论，这是这些计算的基础。 因此，这项研究通过促进最纯粹形式之一的科学进步来促进国家利益：对自然基本规律的理解。 该项目将理论物理、应用数学和计算机科学领域联系起来，预计也将产生超出主要研究领域的广泛影响。 该项目还将培训理论物理和其他学科的研究生和博士后研究员，使他们具备分析推理和信息技术方面的强大技能。更技术性的是，冯·曼特伊特教授将计算LHC可观测量的辐射修正，涉及希格斯玻色子、W和Z玻色子、顶夸克、以及其他在强相互作用和电弱相互作用的规范理论中处于高微扰阶的粒子。一个中心的重点将是计算散射振幅和费曼积分与多圈，多腿，和内部质量。 这些计算是通过改进计算方法的发展实现的，从符号到数值方法，并采用高性能计算机。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Mixed QCD-electroweak corrections to dilepton production at the LHC in the high invariant mass region

• DOI: 10.1007/jhep06(2022)022
• 发表时间: 2022-03
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: F. Buccioni;F. Caola;Herschel A. Chawdhry;Federica Devoto;M. Heller;A. von Manteuffel;K. Melnikov;R. Röntsch;C. Signorile-Signorile-C.-Signorile-Signorile-1404887353

Diphoton Amplitudes in Three-Loop Quantum Chromodynamics

三环量子色动力学中的双光子振幅

• DOI: 10.1103/physrevlett.126.112004
• 发表时间: 2021
• 期刊: Physical Review Letters
• 影响因子: 8.6
• 作者: Caola, Fabrizio;von Manteuffel, Andreas;Tancredi, Lorenzo
• 通讯作者: Tancredi, Lorenzo

Three-loop helicity amplitudes for quark-gluon scattering in QCD

QCD 中夸克-胶子散射的三环螺旋振幅

• DOI: 10.1007/jhep12(2022)082
• 发表时间: 2022
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: Caola, Fabrizio;Chakraborty, Amlan;Gambuti, Giulio;von Manteuffel, Andreas;Tancredi, Lorenzo
• 通讯作者: Tancredi, Lorenzo

Three-loop helicity amplitudes for four-quark scattering in massless QCD

• DOI: 10.1007/jhep10(2021)206
• 发表时间: 2021-07
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: F. Caola;Amlan Chakraborty;Giulio Gambuti;A. von Manteuffel;L. Tancredi

Three-Loop Gluon Scattering in QCD and the Gluon Regge Trajectory

QCD 中的三环胶子散射和胶子 Regge 轨迹

• DOI: 10.1103/physrevlett.128.212001
• 发表时间: 2022
• 期刊: Physical Review Letters
• 影响因子: 8.6
• 作者: Caola, Fabrizio;Chakraborty, Amlan;Gambuti, Giulio;von Manteuffel, Andreas;Tancredi, Lorenzo
• 通讯作者: Tancredi, Lorenzo