ITP OpenIR  > SCI期刊论文
Craig, Nathaniel; Jiang, Minyuan1; Li, Ying-Ying; Sutherland, Dave5
Loops and trees in generic EFTs
Source PublicationJOURNAL OF HIGH ENERGY PHYSICS
Language英语
KeywordHELICITY AMPLITUDES FEYNMAN DIAGRAMS STANDARD MODEL UNITARITY
AbstractWe consider aspects of tree and one-loop behavior in a generic 4d EFT of massless scalars, fermions, and vectors, with a particular eye to the high-energy limit of the Standard Model EFT at operator dimensions 6 and 8. First, we classify the possible Lorentz structures of operators and the subset of these that can arise at tree-level in a weakly coupled UV completion, extending the tree/loop classification through dimension 8 using functional methods. Second, we investigate how operators contribute to tree and one-loop helicity amplitudes, exploring the impact of non-renormalization theorems through dimension 8. We further observe that many dimension 6 contributions to helicity amplitudes, including rational parts, vanish exactly at one-loop level. This suggests the impact of helicity selection rules extends beyond one loop in non-supersymmetric EFTs.
2020
ISSN1029-8479
Issue8Pages:86
Cooperation Status国际
Subject AreaPhysics
MOST Discipline CataloguePhysics, Particles & Fields
DOI10.1007/JHEP08(2020)086
Indexed BySCIE
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/27383
CollectionSCI期刊论文
Affiliation1.Univ Calif Santa Barbara, Dept Phys, Lagoon Rd, Santa Barbara, CA 93106 USA
2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Zhong Guan Cun East St 55, Beijing, Peoples R China
3.Fermilab Natl Accelerator Lab, Theoret Phys Dept, Discovery Rd, Batavia, IL USA
4.Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Clear Water Bay Rd, Hong Kong, Peoples R China
5.Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Lagoon Rd, Santa Barbara, CA 93106 USA
6.INFN, Sez Trieste, Via Bonomea 265, I-34136 Trieste, Italy
Recommended Citation
GB/T 7714
Craig, Nathaniel,Jiang, Minyuan,Li, Ying-Ying,et al. Loops and trees in generic EFTs[J]. JOURNAL OF HIGH ENERGY PHYSICS,2020(8):86.
APA Craig, Nathaniel,Jiang, Minyuan,Li, Ying-Ying,&Sutherland, Dave.(2020).Loops and trees in generic EFTs.JOURNAL OF HIGH ENERGY PHYSICS(8),86.
MLA Craig, Nathaniel,et al."Loops and trees in generic EFTs".JOURNAL OF HIGH ENERGY PHYSICS .8(2020):86.
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