Supratim Das Bakshi
EFT diagrammatica: UV roots of the CP-conserving SMEFT
Bakshi, Supratim Das; Chakrabortty, Joydeep; Prakash, Suraj; Rahaman, Shakeel Ur; Spannowsky, Michael
Authors
Joydeep Chakrabortty
Suraj Prakash
Shakeel Ur Rahaman
Professor Michael Spannowsky michael.spannowsky@durham.ac.uk
Director
Abstract
The Standard Model Effective Field Theory (SMEFT) is an established theoretical framework that parametrises the impact a UV theory has on low-energy observables. Such parametrization is achieved by studying the interactions of SM fields encapsulated within higher mass dimensional (≥ 5) operators. Through judicious employment of the tools of EFTs, SMEFT has become a source of new predictions as well as a platform for conducting a coherent comparison of new physics (beyond Standard Model) scenarios. We, for the first time, are proposing a diagrammatic approach to establish selection criteria for the allowed heavy field representations corresponding to each SMEFT operator. We have elucidated the links of a chain connecting specific CP conserving dimension-6 SMEFT operators with unique sets of heavy field representations. The contact interactions representing each effective operator have been unfolded into tree- and (or) one-loop-level diagrams to reveal unique embeddings of heavy fields within them. For each case, the renormalizable vertices of a UV model serve as the building blocks for all possible unfolded diagrams. Based on this, we have laid the groundwork to construct observable-driven new physics models. This in turn also prevents us from making redundant analyses of similar models. While we have taken a predominantly minimalistic approach, we have also highlighted the necessity for non-minimal interactions for certain operators.
Citation
Bakshi, S. D., Chakrabortty, J., Prakash, S., Rahaman, S. U., & Spannowsky, M. (2021). EFT diagrammatica: UV roots of the CP-conserving SMEFT. Journal of High Energy Physics, 2021(6), Article 33. https://doi.org/10.1007/jhep06%282021%29033
Journal Article Type | Article |
---|---|
Acceptance Date | May 21, 2021 |
Online Publication Date | Jun 4, 2021 |
Publication Date | 2021-06 |
Deposit Date | Aug 5, 2021 |
Publicly Available Date | Aug 5, 2021 |
Journal | Journal of High Energy Physics |
Print ISSN | 1126-6708 |
Electronic ISSN | 1029-8479 |
Publisher | Scuola Internazionale Superiore di Studi Avanzati (SISSA) |
Peer Reviewed | Peer Reviewed |
Volume | 2021 |
Issue | 6 |
Article Number | 33 |
DOI | https://doi.org/10.1007/jhep06%282021%29033 |
Public URL | https://durham-repository.worktribe.com/output/1243433 |
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Copyright Statement
Advance online version This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
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