Project description
Solving the physics transition problem
The transition from the standard model effective field theory (SMEFT) to weak effective theory (WET)parameters is crucial in understanding fundamental physics but poses challenges. Matching conditions, recently known up to the one-loop level, depend on unphysical entities, hindering consistent analysis. With the support of the Marie Skłodowska-Curie Actions programme, the EFT-NLO project aims to compute the full two-loop renormalisation of WET Wilson coefficients. Additionally, it seeks to extend this computation to SMEFT parameters, promising a more precise exploration of new physics phenomena. Specifically, the project will compute the full two-loop renormalisation of WET Wilson coefficients, enhancing the public code wilson. The project promises a more precise exploration of beyond-standard-model theories. Despite the current absence of full one-loop matching, its imminent availability will enable a comprehensive analysis of SMEFT parameters.
Objective
The matching of the SMEFT onto the WET, i.e. expressing the WET parameters in terms of the SMEFT Wilson coefficients, is known since recently up to the one-loop level. These matching conditions depend however on unphysical entities and can therefore not be used in a consistent phenomenological analysis. In order to remove this scheme dependence the two-loop renormalization of the WET parameters needs to be taken into account, since it cancels this scheme dependence and therefore makes the results physical again. One objective of the current research project is to compute the full two-loop renormalization of the WET Wilson coefficients and implement the results in the public code wilson. A second objective of the research project is to conduct the full two-loop renormalization for the SMEFT parameters. Performing the two-loop renormalization is motivated by the fact that at this order many more SMEFT Wilson coefficients become phenomenologically accessible through running effects, which therefore allows for a broader and more precise NP search. Another goal of this computation is again to remove unphysical dependencies that are present in the matching conditions. Although the full one-loop matching from general BSM theories onto the SMEFT is currently unknown, it is, however, expected to be available in the very near future. Together with the proposed calculation these matching conditions can then be used to perform a consistent and completely general NLO analysis of SMEFT parameters.
Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
MAIN PROGRAMME
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Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships
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Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) HORIZON-MSCA-2023-PF-01
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1211 GENEVE 23
Switzerland
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