Theoretical developments in the SMEFT at dimension-8 and beyond
Theoretical developments in the SMEFT at dimension-8 and beyond
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DOI：
10.2172/1855116
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发表时间：
2022-03
期刊：
影响因子：
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通讯作者：
S. Alioli;R. Boughezal;Weiguang Cao;G. Durieux;L. Gr'af;B. Henning;T. Kitahara;Hao-Lin Li;Xiaochuan Lu;C. S. Machado;Adam Martin;Tom Melia;E. Mereghetti;H. Murayama;C. Murphy;Jasper Roosmale Nepveu;Sridip Pal;F. Petriello;Y. Shadmi;J. Shu;Y. Weiss;Ming Xiao;Jiang-Hao Yu
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文献类型：
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作者：
S. Alioli;R. Boughezal;Weiguang Cao;G. Durieux;L. Gr'af;B. Henning;T. Kitahara;Hao-Lin Li;Xiaochuan Lu;C. S. Machado;Adam Martin;Tom Melia;E. Mereghetti;H. Murayama;C. Murphy;Jasper Roosmale Nepveu;Sridip Pal;F. Petriello;Y. Shadmi;J. Shu;Y. Weiss;Ming Xiao;Jiang-Hao Yu
在对Snowmass 2021过程的贡献中，我们回顾了标准模型有效场理论（SMEFT）的理论发展，重点关注8维及更高维度的影响。我们回顾了导致8维和9维smet拉格朗日算子基完整构建的理论进展。我们讨论了某些SMEFT观测值在$1/\Lambda$展开中获得全阶结果的可能性，以及重整化群运行的现状和对正性的影响，并简要介绍了构造SMEFT振幅的on-shell方法。最后，我们提出了几个新的现象学效应，它们首先出现在维度-8，并讨论了这些术语对实验分析的影响。
In this contribution to the Snowmass 2021 process we review theoretical developments in the Standard Model Effective Field Theory (SMEFT) with a focus on effects at the dimension-8 level and beyond. We review the theoretical advances that led to the complete construction of the operator bases for the dimension-8 and dimension-9 SMEFT Lagrangians. We discuss the possibility of obtaining all-orders results in the $1/\Lambda$ expansion for certain SMEFT observables as well as the current status of renormalization group running and implications for positivity, and briefly present the on-shell approach to constructing SMEFT amplitudes. Finally we present several new phenomenological effects that first arise at dimension-8 and discuss the impact of these terms on experimental analyses.